135-840: The Blackwall Tunnel is a pair of road tunnels underneath the River Thames in east London, England, linking the London Borough of Tower Hamlets with the Royal Borough of Greenwich , and part of the A102 road. The northern portal lies just south of the East India Dock Road ( A13 ) in Blackwall ; the southern entrances are just south of The O 2 on the Greenwich Peninsula . The road is managed by Transport for London (TfL). The tunnel
270-654: A Unified System of Photometry. These mesopic visual performance models are conducted in laboratory conditions in which the viewer is not exposed to higher levels of luminance than the level being tested for. Further research is needed to bring additional factors into these models such as visual adaptation and the biological mechanics of rod cells before these models are able to accurately predict visual performance in real world conditions. The current understanding of visual adaptation and rod cell mechanics suggests that any benefits from rod-mediated scotopic vision are difficult, if not impossible, to achieve in real world conditions under
405-675: A charter to the London and Westminster Gas Light and Coke Company , and the first gas company in the world came into being. Less than two years later, on 31 December 1813, the Westminster Bridge was lit by gas. Following this success, gas lighting spread outside London, both within Britain and abroad. The first place outside London in England to have gas lighting, was Preston, Lancashire in 1816, where Joseph Dunn 's Preston Gaslight Company introduced
540-653: A house on the rue Saint-Dominique seventeen years prior. The first gas lamps on the main streets of Paris appeared in January 1829 on the place du Carrousel and the Rue de Rivoli , then on the rue de la Paix , place Vendôme , and rue de Castiglione. By 1857, the Grands Boulevards were all lit with gas; a Parisian writer enthused in August 1857: "That which most enchants the Parisians is
675-630: A large system illuminating a significant portion of the city, with over 13 km of streets lit by 52 incandescent lights and 3 arc lights. Powered by a municipal power company, this system gave Tamworth the title of "First City of Light" in Australia. On 10 December 1885, Härnösand became the first town in Sweden with electric street lighting, following the Gådeå power station being taken into use. Incandescent lamps were primarily used for street lighting until
810-552: A network of creeks. Lying below sea level, it is prone to flooding at exceptional tides, but has nevertheless been inhabited since Roman times. The usually quoted source of the Thames is at Thames Head (at grid reference ST980994 ). This is about 1.5 mi (2.4 km) north of the village of Kemble in southern Gloucestershire , near the town of Cirencester , in the Cotswolds . However, Seven Springs near Cheltenham , where
945-602: A new, brighter gas lighting. Another early adopter was the city of Baltimore , where the gaslights were first demonstrated at Rembrandt Peale 's Museum in 1816, and Peale's Gas Light Company of Baltimore provided the first gas streetlights in the United States. In the 1860s, streetlights were started in the Southern Hemisphere in New Zealand . Kerosene streetlamps were invented by Polish pharmacist Ignacy Łukasiewicz in
1080-428: A number of whole weekends. The tunnel was only closed six full weekends instead of the planned ten. The tunnel also suffers regular problems with strikes from over-height traffic, and vehicles running out of fuel. On 10 December 1996, a man drove a Mercedes truck supporting a crane towards the southbound tunnel, ignored warnings that his vehicle was over-height, and struck a gantry, breaking a steel reinforcement frame in
1215-917: A public inquiry, the government approved the proposal in May 2018, and the contract to build the tunnel was awarded in November 2019. Construction began in March 2021. Charging for the Blackwall Tunnel will begin when the Silvertown Tunnel opens in 2025. Charges were expected to be similar to the Dartford Crossing . As of June 2023, charges for the Dartford Crossing are £2/£2.50 for cars, depending on method of payment. Signs submitted by TfL for approval, with prices suggested in 2015, appeared to show that vehicles using
1350-619: A small foundry in Adelaide Street and occupied by J. W. Sutton and Co. In 1884, Walhalla, Victoria , had two lamps installed on the main street by the Long Tunnel (Gold) Mining Company. In 1886, the isolated mining town of Waratah in Tasmania was the first to have an extensive system of electrically powered street lighting installed. In 1888, the New South Wales town of Tamworth installed
1485-567: A summer venue for organised swimming, which is prohibited on safety grounds in a stretch centred on Central London . After the river took its present-day course, many of the banks of the Thames Estuary and the Thames Valley in London were partly covered in marshland , as was the adjoining Lower Lea Valley . Streams and rivers like the River Lea , Tyburn Brook and Bollo Brook drained into
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#17328449084631620-553: A survey by major motoring organisations rated the tunnel's safety record as "very poor", and concluded it was one of the least safe tunnels in Europe. In 2010, the northbound tunnel was refurbished in order to meet current safety standards. Fire detection systems have been installed in response to new European regulations in the light of recent tunnel fires. In 2010, the southbound tunnel was affected by planned closures for maintenance from 10 pm to 5 am, Thursday to Sunday inclusive, and over
1755-590: A wall-bracket or standard lamp. The standard base is cast metal with an escutcheon bearing two intertwined letters 'F', the Royal cypher of King Ferdinand VII of Spain and commemorates the date of the birth of his daughter, the Infanta Luisa Fernanda, Duchess of Montpensier . The first electric street lighting employed arc lamps , initially the "electric candle", "Jablotchkoff candle", or " Yablochkov candle ", developed by Russian Pavel Yablochkov in 1875. This
1890-466: Is a landmark on the Boat Race course, while Glover's Island forms the centre of a view from Richmond Hill . Islands of historical interest include Magna Carta Island at Runnymede , Fry's Island at Reading, and Pharaoh's Island near Shepperton. In more recent times Platts Eyot at Hampton was the place where Motor Torpedo Boats (MTB)s were built, Tagg's Island near Molesey was associated with
2025-441: Is a raised source of light on the edge of a road or path. Similar lights may be found on a railway platform . When urban electric power distribution became ubiquitous in developed countries in the 20th century, lights for urban streets followed, or sometimes led. Many lamps have light-sensitive photocells that activate the lamp automatically when needed, at times when there is little-to-no ambient light, such as at dusk, dawn, or
2160-402: Is an important water source, especially in the drier months, so maintaining its quality and quantity is extremely important. Groundwater is vulnerable to surface pollution, especially in highly urbanised areas. Brooks, canals and rivers, within an area of 3,842 sq mi (9,951 km ), combine to form 38 main tributaries feeding the Thames between its source and Teddington Lock . This
2295-628: Is believed that Tamesubugus' name was derived from that of the river. Tamese was referred to as a place, not a river in the Ravenna Cosmography ( c. AD 700 ). The river's name has always been pronounced with a simple t /t/ ; the Middle English spelling was typically Temese and the Brittonic form Tamesis . A similar spelling from 1210, "Tamisiam" (the accusative case of "Tamisia"; see Kingston upon Thames § Early history ),
2430-514: Is completed in 2025, both it and the Blackwall Tunnels will be tolled. The tunnels are no longer open to pedestrians, cyclists or other non-motorised traffic, and the northbound tunnel has a 4.0-metre (13.1 ft) height limit. The London Buses route 108 between Lewisham and Stratford runs through the tunnels. A tunnel in the Blackwall area was originally proposed in the 1880s. A bridge
2565-563: Is derived from the Brittonic name for the river, Tamesas (from * tamēssa ), recorded in Latin as Tamesis and yielding modern Welsh Tafwys "Thames". The name element Tam may have meant "dark" and can be compared to other cognates such as Russian темно ( Proto-Slavic * tĭmĭnŭ ), Lithuanian tamsi "dark", Latvian tumsa "darkness", Sanskrit tamas and Welsh tywyll "darkness" and Middle Irish teimen "dark grey". The origin
2700-503: Is fed by at least 50 named tributaries . The river contains over 80 islands . With its waters varying from freshwater to almost seawater, the Thames supports a variety of wildlife and has a number of adjoining Sites of Special Scientific Interest , with the largest being in the North Kent Marshes and covering 20.4 sq mi (5,289 ha). According to Mallory and Adams, the Thames, from Middle English Temese ,
2835-591: Is formed for much of its length for shipping and supplies: through the Port of London for international trade, internally along its length and by its connection to the British canal system. The river's position has put it at the centre of many events in British history, leading to it being described by John Burns as "liquid history". Two broad canals link the river to other rivers: the Kennet and Avon Canal ( Reading to Bath ) and
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#17328449084632970-678: Is found in Magna Carta . The Thames through Oxford is sometimes called the Isis . Historically, and especially in Victorian times, gazetteers and cartographers insisted that the entire river was correctly named the Isis from its source down to Dorchester on Thames and that only from this point, where the river meets the Thame and becomes the "Thame-isis" (supposedly subsequently abbreviated to Thames) should it be so called. Ordnance Survey maps still label
3105-622: Is not found in the data. Towns, cities, and villages can use the unique locations provided by lampposts to hang decorative or commemorative banners. Many communities in the US use lampposts as a tool for fundraising via lamppost banner sponsorship programs first designed by a US-based lamppost banner manufacturer. The major criticisms of street lighting are that it can actually cause accidents if misused , and cause light pollution . There are three optical phenomena that need to be recognized in streetlight installations. There are also physical dangers to
3240-452: Is responsible for managing the flow of water to help prevent and mitigate flooding, and providing for navigation: the volume and speed of water downstream is managed by adjusting the sluices at each of the weirs and, at peak high water, levels are generally dissipated over preferred flood plains adjacent to the river. Occasionally, flooding of inhabited areas is unavoidable and the agency issues flood warnings. Due to stiff penalties applicable on
3375-848: Is shared by many other river names in Britain, such as the River Tamar at the border of Devon and Cornwall , several rivers named Tame in the Midlands and North Yorkshire , the Tavy on Dartmoor , the Team of the North East, the Teifi and Teme of Wales , the Teviot in the Scottish Borders and a Thames tributary, the Thame . Kenneth H. Jackson proposed that the name of
3510-519: Is the first major city to have entirely switched to LED lighting. In North America , the city of Mississauga , Canada was one of the first and largest LED conversion projects, with over 46,000 lights converted to LED technology between 2012 and 2014. It is also one of the first cities in North America to use Smart City technology to control the lights. DimOnOff , a company based in Quebec City ,
3645-404: Is the usual tidal limit ; however, high spring tides can raise the head water level in the reach above Teddington and can occasionally reverse the river flow for a short time. In these circumstances, tidal effects can be observed upstream to the next lock beside Molesey weir , which is visible from the towpath and bridge beside Hampton Court Palace . Before Teddington Lock was built in 1810–12,
3780-545: The A12 and the southern approach takes traffic from the A2 , making the tunnel crossing a key link for both local and longer-distance traffic between the north and south sides of the river. It forms part of a key route into Central London from South East London and Kent and was the easternmost all-day crossing for vehicles before the opening of the Dartford Tunnel in 1963. It remains
3915-833: The Arc de Triomphe , to celebrate the opening of the Paris Universal Exposition . In 1881, to coincide with the Paris International Exposition of Electricity, streetlights were installed on the major boulevards. The first streets in London lit with the electrical arc lamp were by the Holborn Viaduct and the Thames Embankment in 1878. More than 4,000 were in use by 1881, though by then an improved differential arc lamp had been developed by Friedrich von Hefner-Alteneck of Siemens & Halske . The United States
4050-769: The Berwyn Mountains in North Wales . About 450,000 years ago, in the most extreme Ice Age of the Pleistocene , the Anglian , the furthest southern extent of the ice sheet reached Hornchurch in east London, the Vale of St Albans, and the Finchley Gap . It dammed the river in Hertfordshire , resulting in the formation of large ice lakes, which eventually burst their banks and caused
4185-525: The British Geological Survey from the banks of the tidal River Thames contain geochemical information and fossils which provide a 10,000-year record of sea-level change. Combined, this and other studies suggest that the Thames sea-level has risen more than 30 m during the Holocene at a rate of around 5–6 mm per year from 10,000 to 6,000 years ago. The rise of sea level dramatically reduced when
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4320-514: The Churn (which feeds into the Thames near Cricklade ) rises, is also sometimes quoted as the Thames' source, as this location is farthest from the mouth and adds some 14 mi (23 km) to the river's length. At Seven Springs above the source is a stone with the Latin hexameter inscription "Hic tuus o Tamesine pater septemgeminus fons", which means "Here, O Father Thames, [is] your sevenfold source". The springs at Seven Springs flow throughout
4455-664: The Grand Union Canal (London to the Midlands). The Grand Union effectively bypassed the earlier, narrow and winding Oxford Canal which remains open as a popular scenic recreational route. Three further cross-basin canals are disused but are in various stages of reconstruction: the Thames and Severn Canal (via Stroud ), which operated until 1927 (to the west coast of England), the Wey and Arun Canal to Littlehampton , which operated until 1871 (to
4590-592: The Jubilee line from North Greenwich (TfL) to Canning Town on the east and Canary Wharf on the west. The Docklands Light Railway also passes under the Thames between Island Gardens at the southern end of the Isle of Dogs and Cutty Sark in the centre of Greenwich . Horse-drawn traffic was partially banned from the tunnel during peak hours in July 1939 and completely banned in August 1947. Pedestrians have been banned from using
4725-687: The Metropolitan Police were searching the tunnel, the bomb detonated at 12:40 a.m., causing an explosion in a gas holder near the southern exit. This resulted in a fire on another gas holder approximately an hour later. No injuries were reported. Speaking in the House of Commons , Home Secretary Merlyn Rees hoped "the House will join me in condemning these attacks and will support the Government in their determination not to be swayed by such methods". A Belfast man
4860-453: The Netherlands , Philips found that birds can get disoriented by the red wavelengths in street lighting, and in response developed alternative lighting that only emit in the green and blue wavelengths of the visible spectrum. The lamps were installed on Ameland in a small-scale test. If successful, the technology could be used on ships and offshore installations to avoid luring birds towards
4995-509: The RideLondon event, although this arrangement is no longer in place. The Blackwall Tunnel is the only major road crossing of the Thames in East London, and consequently has very high traffic volumes. Furthermore, the limitations of the western bore of the tunnel (not accessible to vehicles taller than 4 m (13 ft)), mean that larger HGV and double decker buses cannot pass through
5130-417: The River Lea can be considered another boundary. Most of the local riverside was also marshland. The land was drained and became farmland; it was built on after the Industrial Revolution . Canvey Island in southern Essex (area 18.45 km , 7.12 sq mi; population 40,000 ) was once marshy, but is now a fully reclaimed island in the Thames estuary, separated from the mainland of south Essex by
5265-433: The Royal Academy , London , in 1785. They are now on show at the River and Rowing Museum in Henley). Richard Coates suggests that while the river was as a whole called the Thames, part of it, where it was too wide to ford, was called * (p)lowonida . This gave the name to a settlement on its banks, which became known as Londinium , from the Indo-European roots * pleu- "flow" and * -nedi "river" meaning something like
5400-441: The Thames Barrier , which protects central London from flooding by storm surges . Below the barrier, the river passes Woolwich , Thamesmead , Dagenham , Erith , Purfleet , Dartford , West Thurrock , Northfleet , Tilbury and Gravesend before entering the Thames Estuary near Southend-on-Sea . The sea level in the Thames estuary is rising and the rate of rise is increasing. Sediment cores up to 10 m deep collected by
5535-420: The Thanetian stage of the late Palaeocene epoch. Until around 500,000 years ago, the Thames flowed on its existing course through what is now Oxfordshire , before turning to the north-east through Hertfordshire and East Anglia and reaching the North Sea near present-day Ipswich . At this time the river-system headwaters lay in the English West Midlands and may, at times, have received drainage from
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5670-408: The current through the string became zero, causing the voltage of the circuit (thousands of volts) to be imposed across the insulating film, penetrating it (see Ohm's law ). In this way, the failed lamp was bypassed and power was restored to the rest of the district. The streetlight circuit contained an automatic current regulator, preventing the current from increasing as lamps burned out, preserving
5805-490: The "spirit" of coal and discovered its flammability by accident. William Murdoch (sometimes spelled "Murdock") was the first to use this gas for the practical application of lighting. In the early 1790s, while overseeing the use of his company's steam engines in tin mining in Cornwall, Murdoch began experimenting with various types of gas, finally settling on coal-gas as the most effective. He first lit his own house in Redruth , Cornwall in 1792. In 1798, he used gas to light
5940-404: The 1.1-mile (1.7 km) approach to the northbound tunnel took around 19 minutes in rush hour traffic, or a delay of approximately 11 minutes per kilometre. To relieve the congestion, a tidal flow system was introduced in 1978, allowing northbound traffic to use the western lane of the eastern tunnel. The congestion is not limited to weekday rush hours. There is often congestion with tailbacks at
6075-400: The 20th century, high-pressure sodium (HPS) lamps were preferred, taking further the same virtues. Such lamps provide the greatest amount of photopic illumination for the least consumption of electricity. Two national standards now allow for variation in illuminance when using lamps of different spectra . In Australia, HPS lamp performance needs to be reduced by a minimum value of 75%. In
6210-567: The A2 because the impact then on Lewisham is unacceptable." In 2012, TfL announced their intention to toll the tunnels to pay for the Silvertown Link crossing, suggesting it was the "most appropriate way". Responding to this, Paul Watters from the AA said "We’ve already seen the Western extension of the congestion charge dropped because it was hugely unpopular and I think tolling on the Blackwall Tunnel will be as controversial as that." In June 2013, TfL announced they would send registration details of any broken-down or over-height commercial vehicle in
6345-436: The Blackwall Tunnels since May 1969. The London Buses route 108 ( Stratford – Lewisham ) runs through the tunnels and there are bus priority gates at both entrances to allow buses to avoid traffic congestion. On occasion in the past, buses have been escorted through the tunnel when it has been closed to other traffic. The northbound Blackwall Tunnel is a traffic bottleneck with tailbacks . A TfL study in 2009 revealed that
6480-439: The Civil Twilight Collective created a variant of the conventional LED streetlight, namely the Lunar-resonant streetlight. These lights increase or decrease the intensity of the streetlight according to the lunar light. This streetlight design thus reduces energy consumption as well as light pollution. Two very similar measurement systems were created to bridge the scotopic and photopic luminous efficiency functions, creating
6615-411: The Mayor of London proposed a discount for low-income residents. Download coordinates as: River Thames The River Thames ( / t ɛ m z / TEMZ ), known alternatively in parts as the River Isis , is a river that flows through southern England including London . At 215 miles (346 km), it is the longest river entirely in England and the second-longest in
6750-411: The North Sea, and the Thames Barrier was built in the 1980s to protect London from this risk. The Nore is the sandbank that marks the mouth of the Thames Estuary , where the outflow from the Thames meets the North Sea . It is roughly halfway between Havengore Creek in Essex and Warden Point on the Isle of Sheppey in Kent. Until 1964 it marked the seaward limit of the Port of London Authority. As
6885-508: The Parisian Parliament decreed that a torch be installed and lit at each intersection, and in 1594 the police changed this to lanterns. Still, in the mid 17th century it was a common practice for travelers to hire a lantern-bearer if they had to move at night through the dark, winding streets. King Louis XIV authorized sweeping reforms in Paris in 1667, which included the installation and maintenance of lights on streets and at intersections, as well as stiff penalties for vandalizing or stealing
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#17328449084637020-489: The River Thames on the Tideway include the rivers Crane , Brent , Wandle , Ravensbourne (the final part of which is called Deptford Creek ), Lea (the final part of which is called Bow Creek ), Roding (Barking Creek), Darent and Ingrebourne . In London, the water is slightly brackish with sea salt, being a mix of sea and fresh water. This part of the river is managed by the Port of London Authority . The flood threat here comes from high tides and strong winds from
7155-401: The Severn has a discharge almost twice as large on average despite having a smaller drainage basin . In Scotland , the Tay achieves more than double the Thames' average discharge from a drainage basin that is 60% smaller. Along its course are 45 navigation locks with accompanying weirs . Its catchment area covers a large part of south-eastern and a small part of western England; the river
7290-416: The Thames Estuary), the river is subject to tidal activity from the North Sea . Before the lock was installed, the river was tidal as far as Staines, about 16 mi (26 km) upstream. London, capital of Roman Britain , was established on two hills, now known as Cornhill and Ludgate Hill . These provided a firm base for a trading centre at the lowest possible point on the Thames. A river crossing
7425-470: The Thames as "River Thames or Isis" down to Dorchester. Since the early 20th century this distinction has been lost in common usage outside of Oxford, and some historians suggest the name Isis is nothing more than a truncation of Tamesis , the Latin name for the Thames. Sculptures titled Tamesis and Isis by Anne Seymour Damer are located on the bridge at Henley-on-Thames , Oxfordshire (the original terracotta and plaster models were exhibited at
7560-439: The Thames is not Indo-European (and of unknown meaning), while Peter Kitson suggested that it is Indo-European but originated before the Britons and has a name indicating "muddiness" from a root *tā- , 'melt'. Early variants of the name include: Indirect evidence for the antiquity of the name "Thames" is provided by a Roman potsherd found at Oxford, bearing the inscription Tamesubugus fecit (Tamesubugus made [this]). It
7695-409: The UK, illuminances are reduced with higher values S/P ratio. New street lighting technologies, such as LED or induction lights , emit a white light that provides high levels of scotopic lumens . It is a commonly accepted practice to justify and implement a lower luminance level for roadway lighting based on increased scotopic lumens provided by white light. However, this practice fails to provide
7830-411: The United Kingdom , after the River Severn . The river rises at Thames Head in Gloucestershire and flows into the North Sea near Tilbury , Essex and Gravesend , Kent, via the Thames Estuary . From the west, it flows through Oxford (where it is sometimes called the Isis), Reading , Henley-on-Thames and Windsor . The Thames also drains the whole of Greater London . The lower reaches of
7965-433: The advent of high-intensity gas-discharge lamps . They were often operated at high-voltage series circuits . Series circuits were popular since their higher voltage produced more light per watt consumed. Furthermore, before the invention of photoelectric controls, a single switch or clock could control all the lights in an entire district. To avoid having the entire system go dark if a single lamp burned out, each streetlamp
8100-442: The capacity of the original tunnel was soon perceived as inadequate. In 1930, John Mills, MP for Dartford , remarked that HGVs delivering from Essex to Kent could not practically use any crossing of the Thames downstream of the tunnel. The LCC obtained an act in 1938, the London County Council (Tunnel and Improvements) Act 1938 ( 1 & 2 Geo. 6 . c. lxxxi), allowing them to construct a new tunnel, but work did not start due to
8235-423: The case of the Colne ), and man-made distributaries such as the Longford River . Three canals intersect this stretch: the Oxford Canal , Kennet and Avon Canal and Wey Navigation . Its longest artificial secondary channel (cut), the Jubilee River , was built between Maidenhead and Windsor for flood relief and completed in 2002. The non-tidal section of the river is managed by the Environment Agency , which
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#17328449084638370-410: The change. In November 2007, the Mayor of London , Ken Livingstone responded to complaints from Greenwich Council about congestion in the area, with the possibility of setting up a small congestion charging zone . He clarified that this would not extend to the Blackwall Tunnel, stating "I have given that commitment right the way through my period as Mayor, and there cannot be anything that impacts on
8505-452: The city of Lemberg ( Austrian Empire ), in 1853. His kerosene lamps were later widely used in Bucharest, Paris, and other European cities. He went on to open the world's first mine in 1854 and the world's first kerosene refinery in 1856 in Jasło , Poland. In Paris, public street lighting was first installed on a covered shopping street, the Passage des Panoramas , in 1817, private interior gas lighting having been previously demonstrated in
8640-423: The confluence, the overall length of the Thames measured from Seven Springs, at 229 mi (369 km), is greater than the Severn's length of 220 mi (350 km). Thus, the "Churn/Thames" river may be regarded as the longest natural river in the United Kingdom. The stream from Seven Springs is joined at Coberley by a longer tributary which could further increase the length of the Thames, with its source in
8775-486: The context needed to apply laboratory-based visual performance testing to the real world. Critical factors such as visual adaptation are left out of this practice of lowering luminance levels, leading to reduced visual performance. Additionally, there have been no formal specifications written around Photopic/Scotopic adjustments for different types of light sources, causing many municipalities and street departments to hold back on implementation of these new technologies until
8910-457: The dark than in daylight. At least in the 1980s and 1990s, when automobile crashes were far more common, street lighting was found to reduce pedestrian crashes by approximately 50%. Furthermore, in the 1970s, lighted intersections and highway interchanges tended to have fewer crashes than unlighted intersections and interchanges. Some say lighting reduces crime, as many would expect. However, others say any correlation (let alone causation)
9045-399: The decomposition of "oil" and other animal substances. Public attention was attracted to "oil-gas" by the display of the patent apparatus at Apothecary's Hall , by Taylor & Martineau . Farola fernandina is a traditional design of gas streetlight which remains popular in Spain. Essentially, it is a neoclassical French style of gas lamp dating from the late 18th century. It may be either
9180-430: The decrease in safety during counterflow operations. The decision to end the counterflow was controversial, particularly as TfL and the MPS had been considering it since 2005, without properly informing affected borough councils, and an independent committee was set up to evaluate the decision. The ending of the counterflow system has brought protests from users of the tunnel and those experiencing increased congestion due to
9315-408: The development of cheap, reliable and bright incandescent light bulbs at the end of the 19th century, arc lights passed out of use for street lighting, but remained in industrial use longer. The first street to be lit by an incandescent lightbulb was Mosley Street, in Newcastle . The street was lit for one night by Joseph Swan 's incandescent lamp on 3 February 1879. Consequently, Newcastle has
9450-418: The easternmost free fixed road crossing of the Thames, and regularly suffers congestion, to the extent that tidal flow schemes were in place from 1978 until their controversial removal in 2007. Given the very high traffic volumes at the crossing (and the height restrictions of the Victorian bore) the crossing is being supplemented by the Silvertown Tunnel , currently under construction. When the Silvertown Tunnel
9585-478: The first city street in the world to be lit by electric lighting. The first city in the United States to successfully demonstrate electric lighting was Cleveland , Ohio, with 12 electric lights around the Public Square road system on 29 April 1879. Wabash, Indiana , lit 4 Brush arc lamps with 3,000 candlepower each, suspended over their courthouse on 2 February 1880, making the town square "as light as midday". Kimberley , Cape Colony (modern South Africa),
9720-417: The fixtures. Paris had more than 2,700 streetlights by the end of the 17th century, and twice as many by 1730. Under this system, streets were lit with lanterns suspended 20 yards (18 m) apart on a cord over the middle of the street at a height of 20 feet (6.1 m); as an English visitor enthused in 1698, 'The streets are lit all winter and even during the full moon!' In London, public street lighting
9855-468: The flowing river or the wide flowing unfordable river. The river gives its name to three informal areas: the Thames Valley , a region of England around the river between Oxford and West London; the Thames Gateway ; and the greatly overlapping Thames Estuary around the tidal Thames to the east of London and including the waterway itself. Thames Valley Police is a formal body that takes its name from
9990-648: The grounds of the National Star College at Ullenwood . The Thames flows through or alongside Ashton Keynes , Cricklade , Lechlade , Oxford , Abingdon-on-Thames , Wallingford , Goring-on-Thames and Streatley (at the Goring Gap ), Pangbourne and Whitchurch-on-Thames , Reading , Wargrave , Henley-on-Thames , Marlow , Maidenhead , Windsor and Eton , Staines-upon-Thames and Egham , Chertsey , Shepperton , Weybridge , Sunbury-on-Thames , Walton-on-Thames , Molesey and Thames Ditton . The river
10125-503: The ice melt nearly concluded over the past 4,000 years. Since the beginning of the 20th century, rates of sea level rise range from 1.22 mm per year to 2.14 mm per year. The Thames River Basin District, including the Medway catchment, covers an area of 6,229 sq mi (16,130 km ). The entire river basin is a mixture of urban and rural, with rural landscape predominating in
10260-620: The impresario Fred Karno and Eel Pie Island at Twickenham was the birthplace of the South East's R&B music scene. Westminster Abbey and the Palace of Westminster (commonly known today as the Houses of Parliament ) were built on Thorney Island , which used to be an eyot . Researchers have identified the River Thames as a discrete drainage line flowing as early as 58 million years ago, in
10395-476: The lamps. According to some sources, illumination was ordered in London in 1417 by Sir Henry Barton , Mayor of London though there is no firm evidence of this. Public street lighting was first developed in the 16th century, and accelerated following the invention of lanterns with glass windows by Edmund Heming in London and Jan van der Heyden in Amsterdam, which greatly improved the quantity of light. In 1588
10530-594: The life of the remaining lamps. When the failed lamp was replaced, a new piece of film was installed, once again separating the contacts in the cutout. This system was recognizable by the large porcelain insulator separating the lamp and reflector from the mounting arm. This was necessary because the two contacts in the lamp's base may have operated at several thousand volts above ground. Today, street lighting commonly uses high-intensity discharge lamps . Low-pressure sodium (LPS) lamps became commonplace after World War II for their low power consumption and long life. Late in
10665-498: The lower portions to increase their visibility. High winds or accumulated metal fatigue also occasionally topple streetlights. Light pollution can hide the stars and interfere with astronomy . In settings near astronomical telescopes and observatories , low-pressure sodium lamps may be used. These lamps are advantageous over other lamps such as mercury and metal halide lamps because low-pressure sodium lamps emit lower intensity, monochromatic light. Observatories can filter
10800-506: The main building of the Soho Foundry and in 1802 lit the outside in a public display of gas lighting, the lights astonishing the local population. The first public street lighting with gas was demonstrated in Pall Mall , London on 4 June 1807 by Frederick Albert Winsor . In 1811, Engineer Samuel Clegg designed and built what is now considered the oldest extant gasworks in the world. Gas
10935-487: The new lighting by gas of the boulevards...From the church of the Madeleine all the way to rue Montmartre, these two rows of lamps, shining with a clarity white and pure, have a marvelous effect." The gaslights installed on the boulevards and city monuments in the 19th century gave the city the nickname "The City of Light." Oil-gas appeared in the field as a rival of coal-gas. In 1815, John Taylor patented an apparatus for
11070-426: The non-tidal river, which is a drinking water source before treatment, sanitary sewer overflow from the many sewage treatment plants covering the upper Thames basin should be rare in the non-tidal Thames. However, storm sewage overflows are still common in almost all the main tributaries of the Thames despite claims by Thames Water to the contrary. Below Teddington Lock (about 55 mi or 89 km upstream of
11205-640: The northbound tunnel was Grade II listed in 1973, while the ventilation towers were listed in 2000. In April 1986, the tunnel became part of the UK trunk road network. It was detrunked and control handed to TfL in September 1999. On 18 January 1979, an anonymous caller to the Press Association informed them that the Provisional IRA had planted a bomb in the tunnel that was scheduled to detonate at midnight. While
11340-527: The old tunnel was closed for refurbishment. It re-opened on 4 April 1969 with a new overheight vehicle detection system . In the late 1960s, proposals were made to connect the tunnel with a free-flow, grade-separated motorway system as part of the London Ringways project. The only parts of this project completed were the A102(M) Blackwall Tunnel approach roads in 1973. The entrance gateway to
11475-501: The onset of dark weather conditions. This function in older lighting systems could be performed with the aid of a solar dial . Many street light systems are being connected underground instead of wiring from one utility post to another. Street lights are an important source of public security lighting intended to reduce crime. Early lamps were used in the Ancient Greek and Ancient Roman civilizations, where light primarily served
11610-472: The open sea at night. Bats can be negatively impacted by streetlights, with evidence showing that red light can be least harmful. As a result, some areas have installed red LED streetlights to minimise disruption to bats. A study published in Science Advances reported that streetlights in southern England had detrimental impacts on local insect populations. Streetlights can also impact plant growth and
11745-472: The outbreak of World War II . Construction eventually started in 1958 with preliminary work on the northern approach road. By this time, traffic had become progressively worse. In 1960, Richard Marsh , MP for Greenwich complained that vehicles could spend 30 to 45 minutes stuck in tunnel traffic. The new eastern tunnel, 8.59 metres (28 ft 2 in) in diameter, was accepted into the roads programme in March 1959, and construction started in March 1960. It
11880-423: The posts of streetlamps, other than children climbing them for recreational purposes. Streetlight stanchions (lampposts) pose a collision risk to motorists and pedestrians, particularly those affected by poor eyesight or under the influence of alcohol. This can be reduced by designing them to break away when hit (known as frangible , collapsible, or passively safe supports), protecting them by guardrails, or marking
12015-687: The presence of high luminance light sources. Outdoor Site-Lighting Performance (OSP) is a method for predicting and measuring three different aspects of light pollution: glow, trespass and glare. Using this method, lighting specifiers can quantify the performance of existing and planned lighting designs and applications to minimize excessive or obtrusive light leaving the boundaries of a property. Major advantages of street lighting include prevention of automobile accidents and increase in safety. Studies have shown that darkness results in numerous crashes and fatalities, especially those involving pedestrians; pedestrian fatalities are 3 to 6.75 times more likely in
12150-550: The process. The entire tunnel was immediately closed, not only to retrieve the vehicle, but to perform additional safety checks. Because the Limehouse Link tunnel , which runs near to the north end of the Blackwall Tunnel, and the Queen Elizabeth II Bridge, part of the Dartford Crossing, were also closed on the same day, the accident caused one of the worst traffic jams in the capital. In February 2011, TfL reported that
12285-552: The purpose of security , to both protect the wanderer from tripping on the path over something and keep potential robbers at bay. At that time, oil lamps were used predominantly, as they provided a long-lasting and moderate flame. A slave responsible for lighting the oil lamps in front of Roman villas was called a lanternarius . In the words of Edwin Heathcote , "Romans illuminated the streets with oil lamps, and cities from Baghdad to Cordoba were similarly lit when most of Europe
12420-490: The river are called the Tideway , derived from its long tidal reach up to Teddington Lock . Its tidal section includes most of its London stretch and has a rise and fall of 23 ft (7 m). From Oxford to the estuary, the Thames drops by 55 metres (180 ft). Running through some of the drier parts of mainland Britain and heavily abstracted for drinking water, the Thames' discharge is low considering its length and breadth:
12555-581: The river passes Pimlico and Vauxhall , and then forms one of the principal axes of the city, from the Palace of Westminster to the Tower of London . At this point, it historically formed the southern boundary of the medieval city, with Southwark , on the opposite bank, then being part of Surrey . Beyond central London, the river passes Bermondsey , Wapping , Shadwell , Limehouse , Rotherhithe , Millwall , Deptford , Greenwich , Cubitt Town , Blackwall , New Charlton and Silvertown , before flowing through
12690-548: The river to divert onto its present course through the area of present-day London. The ice lobe which stopped at present-day Finchley deposited about 14 metres of boulder clay there. Its torrent of meltwater gushed through the Finchley Gap and south towards the new course of the Thames, and proceeded to carve out the Brent Valley in the process. Street lighting A street light , light pole , lamp pole, lamppost , streetlamp , light standard , or lamp standard
12825-439: The river was tidal at peak spring tides as far as Staines upon Thames . In descending order, non-related tributaries of the non-tidal Thames, with river status, are the Churn , Leach , Cole , Ray , Coln , Windrush , Evenlode , Cherwell , Ock , Thame , Pang , Kennet , Loddon , Colne , Wey and Mole . In addition, there are occasional backwaters and artificial cuts that form islands, distributaries (most numerous in
12960-588: The river, covering three counties . In non-administrative use, the river's name is used in those of Thames Valley University , Thames Water , Thames Television , publishing company Thames & Hudson , Thameslink (north–south rail service passing through central London ) and South Thames College . An example of its use in the names of historic entities is the Thames Ironworks and Shipbuilding Company . Marks of human activity, in some cases dating back to Pre-Roman Britain , are visible at various points along
13095-451: The river, while some islands, e.g. Thorney Island , formed over the ages. The northern tip of the ancient parish of Lambeth , for example, was marshland known as Lambeth Marshe , but it was drained in the 18th century; the street names Lower Marsh and Upper Marsh preserve a memory. Until the middle of the Victorian era, malaria was commonplace beside the River Thames, even in London, and
13230-515: The river. These include a variety of structures connected with use of the river, such as navigations, bridges and watermills , as well as prehistoric burial mounds . The lower Thames in the Roman era was a shallow waterway winding through marshes. But centuries of human intervention have transformed it into a deep tidal canal flowing between 200 miles of solid walls; these defend a floodplain where 1.5 million people work and live. A major maritime route
13365-600: The sandbank was a major hazard for shipping coming in and out of London, in 1732 it received the world's first lightship . This became a major landmark, and was used as an assembly point for shipping. Today it is marked by Sea Reach No. 1 Buoy. The River Thames contains over 80 islands ranging from the large estuarial marshlands of the Isle of Sheppey and Canvey Island to small tree-covered islets like Rose Isle in Oxfordshire and Headpile Eyot in Berkshire. They are found all
13500-433: The sodium wavelength out of their observations and virtually eliminate the interference from nearby urban lighting. Full cutoff streetlights also reduce light pollution by reducing the amount of light that is directed at the sky, which also improves the luminous efficiency of the light. Streetlights can impact biodiversity and ecosystems—for instance, disrupting the migration of some nocturnally migrating bird species. In
13635-528: The south coast), and the Wilts & Berks Canal . Rowing and sailing clubs are common along the Thames, which is navigable to such vessels. Kayaking and canoeing also take place. Major annual events include the Henley Royal Regatta and the Boat Race , while the Thames has been used during two Summer Olympic Games : 1908 ( rowing ) and 1948 ( rowing and canoeing ). Safe headwaters and reaches are
13770-409: The south, and avoid a sewer underneath Bedford Street. Some sources, such as PJ Thomas (circa 1899), state that an additional purpose was to prevent horses from bolting once they saw daylight. The tunnel carries two lanes of traffic, though higher vehicles need to keep to the left-hand lane so that they do not hit the tunnel's inner lining. Due to the increase in motor traffic in the early 20th century,
13905-541: The standards are updated. Eastbourne in East Sussex, UK is currently undergoing a project to see 6000 of its streetlights converted to LED and will be closely followed by Hastings in early 2014. Many UK councils are undergoing mass-replacement schemes to LED, and though streetlights are being removed along many long stretches of UK motorways (as they are not needed and cause light pollution), LEDs are preferred in areas where lighting installations are necessary. Milan , Italy,
14040-570: The top of lampposts; by 1817, there were 4,694 lamps on the Paris streets. During the French Revolution (1789–1799), the revolutionaries found that the lampposts were a convenient place to hang aristocrats and other opponents. The first widespread system of street lighting used piped coal gas as fuel. Stephen Hales was the first person who procured a flammable fluid from the actual distillation of coal in 1726 and John Clayton, in 1735, called gas
14175-461: The tunnel between 6am and 10pm will be charged £4 (cars), £3.50 (motorcycles) or £8.50 (other vehicles) for a single journey. The charges are expected to be agreed in 2024 and the system available for drivers to register. Allowing for inflation, the £4 charge for cars is likely to be £5.25. Discounts for residents in Greenwich, Newham and Tower Hamlets were considered in 2015 and rejected. In October 2023
14310-441: The tunnel had been closed 1,200 times in the previous year for a total of 157 hours, while New Civil Engineer magazine claimed it shut 1,448 times in 2010. To try to prevent closures of this nature, an LED noticeboard was set up in the northbound approach, counting the number of breakdowns and accidents per month occurring inside the tunnel. During the 2010s the tunnel has been closed to motor traffic to provide cyclists access to
14445-462: The tunnel in both directions. Given this, an expansion of the crossing has been proposed for many years—such as a third bore of the tunnel, proposed in 1989—however none of these proposals have come to fruition. Following the cancellation of the Thames Gateway Bridge in 2008, a new crossing from the Greenwich Peninsula to Silvertown —the Silvertown Tunnel —was proposed by TfL. Following
14580-518: The tunnel lining was manufactured in Glasgow , while the manual labour came from provincial England, particularly Yorkshire . The tunnel was formally opened by the Prince of Wales on 22 May 1897. The total cost of the tunnel was £1.4 million, and 800 men were employed in its construction, during which seven deaths were recorded. The southern entrance gateway to the tunnel, also known as Southern Tunnel House,
14715-471: The tunnel to the Vehicle and Operator Services Agency (VOSA), and set up a new automatic recognition system to detect unsuitable heavy goods vehicles heading towards it. TfL commissioner Sir Peter Hendy said that "this partnership working will help improve traffic flow on one of the busiest routes in the capital." The Blackwall Tunnel has attracted criticism in the past for its perceived lack of safety. In 2002,
14850-454: The two fifths of London's population that lived to the east of London Bridge . The Thames Tunnel (Blackwall) Act 1887 ( 50 & 51 Vict. c. clxxii) was enacted in August 1887. It provided the legal framework necessary to construct the tunnel. The initial proposal, made by Sir Joseph Bazalgette , called for three parallel tunnels, two for vehicular traffic and one for foot, with an expected completion date of works within seven years. It
14985-748: The way from Fiddler's Island in Oxfordshire to the Isle of Sheppey in Kent. Some of the largest inland islands, for example Formosa Island near Cookham and Andersey Island at Abingdon, were created naturally when the course of the river divided into separate streams. In the Oxford area the river splits into several streams across the floodplain ( Seacourt Stream , Castle Mill Stream , Bulstake Stream and others), creating several islands ( Fiddler's Island , Osney and others). Desborough Island , Ham Island at Old Windsor and Penton Hook Island were artificially created by lock cuts and navigation channels. Chiswick Eyot
15120-445: The weekends, especially on Sunday evenings. Due to its sharp turns with restricted headroom, high-sided vehicles can only use the left-hand lane of the western tunnel, so it was not possible to reverse the tidal flow in the evening. In April 2007, the morning tidal flow was discontinued, after reports by TfL and the Metropolitan Police (MPS) of an increase in dangerous motoring behaviour; these blamed poor driving, such as overtaking, for
15255-452: The west, and the Dartford Crossing 16 mi (26 km) to the east. The Woolwich Free Ferry is 2 mi (3 km) to the east, but is closed overnight, often reduced to one boat in operation, or completely closed at weekends. Variable message signs (VMS) near the tunnel inform drivers if the ferry is available. When open, queuing for the ferry causes significant congestion around Woolwich town centre. Underground railway links include
15390-469: The western part. The area is among the driest in the United Kingdom. Water resources consist of groundwater from aquifers and water taken from the Thames and its tributaries, much of it stored in large bank-side reservoirs . The Thames itself provides two-thirds of London's drinking water, while groundwater supplies about 40 per cent of public water supplies in the overall catchment area. Groundwater
15525-566: The year, while those at Thames Head are seasonal (a winterbourne ). With a length of 215 mi (346 km), the Thames is the longest river entirely in England. (The longest river in the United Kingdom, the Severn , flows partly in Wales .) However, as the River Churn, sourced at Seven Springs, is 14 mi (23 km) longer than the section of the Thames from its traditional source at Thames Head to
15660-454: Was a carbon arc lamp employing alternating current , which ensured that both electrodes were consumed at equal rates. In 1876, the common council of the city of Los Angeles ordered four arc lights installed in various places in the fledgling town for street lighting. On 30 May 1878, the first electric streetlights in Paris were installed on the avenue de l'Opera and the Place de l'Étoile , around
15795-426: Was already an established route. At the time of opening, the strip lighting in the tunnel was commended as "a big improvement" on the standard provided in the original tunnel. In contrast with the Victorian northbound tunnel, the eastern tunnel had no sharp bends, and emergency telephones were provided. Its distinctive ventilation towers were designed in 1964 by GLC architect Terry Farrell . Immediately after opening,
15930-479: Was built at the site of London Bridge . London Bridge is now used as the basis for published tide tables giving the times of high tide . High tide reaches Putney about 30 minutes later than London Bridge, and Teddington about an hour later. The tidal stretch of the river is known as "the Tideway ". Tide tables are published by the Port of London Authority and are available online. Times of high and low tides are also posted on Twitter. The principal tributaries of
16065-468: Was chosen as a Smart City partner for this project. In the United States, the city of Ann Arbor , Michigan was the first metropolitan area to fully implement LED street lighting in 2006. Since then, sodium-vapor lamps were slowly being replaced by LED lamps . Photovoltaic-powered LED luminaires are gaining wider acceptance. Preliminary field tests show that some LED luminaires are energy-efficient and perform well in testing environments. In 2007,
16200-400: Was designed by LCC architect Thomas Blashill and was built just before the tunnel was completed. It comprises two floors with an attic. Today the western bore is only used for northbound traffic and is not accessible to vehicles taller than 4 m (13 ft). The tunnel has several sharp bends, in order that the tunnel could align with Northumberland Wharf to the north and Ordnance Wharf to
16335-433: Was equipped with a device that ensured that the circuit would remain intact. Early series streetlights were equipped with isolation transformers. that would allow current to pass across the transformer whether the bulb worked or not. Later, the film cutout was invented. This was a small disk of insulating film that separated two contacts connected to the two wires leading to the lamp. If the lamp failed (an open circuit ),
16470-458: Was frequently lethal. Some cases continued to occur into the early 20th century. Draining of the marshes helped with its eradication, but the causes are complex and unclear. The East End of London , also known simply as the East End , was the area of London east of the medieval walled City of London and north of the River Thames, although it is not defined by universally accepted formal boundaries;
16605-523: Was implemented around the end of the 17th century; a diarist wrote in 1712 that 'All the way, quite through Hyde Park to the Queen's Palace at Kensington, lanterns were placed for illuminating the roads on dark nights.' A much-improved oil lantern, called a réverbère , was introduced in 1745 and improved in subsequent years. The light shed from these réverbères was considerably brighter, enough that some people complained of glare. These lamps were attached to
16740-505: Was jailed in May 1983 for his role in the bombing, and was eventually released at the end of his sentence some 17½ years later, still professing pride in his IRA participation. TfL state that one of the major issues with the Blackwall Tunnels is the lack of resilience in the event of an incident—as the nearest alternative road crossings are the Rotherhithe Tunnel 2 mi (3 km) to the west, Tower Bridge 3 mi (5 km) to
16875-483: Was living in what it is now rather unfashionable to call the Dark Ages but which were, from the point of view of street lighting, exactly that." So-called " link boys " escorted people from one place to another through the murky, winding streets of medieval towns. Before incandescent lamps, candle lighting was employed in cities. The earliest lamps required that a lamplighter tour the town at dusk, lighting each of
17010-499: Was not feasible due to shipping in the River Thames in East London. According to Robert Webster , then MP for St Pancras East , a tunnel would "be very useful to the East End of London, a district representing in trade and commerce a population greater than the combined populations of Liverpool, Manchester and Birmingham." By this time, all road bridges in London east of the ferry at Chiswick were toll-free, but these were of little use to
17145-524: Was opened on 2 August 1967 by Desmond Plummer , Leader of the Greater London Council (GLC). It is wider than the western tunnel, carries two lanes of traffic and is usable by vehicles up to 4.72 m (15.5 ft) in height. During construction, transport minister Ernest Marples clarified that unlike the Dartford Tunnel, also then under construction, tolls would not be imposed as the tunnel
17280-541: Was originally commissioned by the Metropolitan Board of Works but, just before the contract was due to start, responsibility passed to the London County Council (LCC) when the former body was abolished in 1889 and Bazalgette's work on the tunnel ended. The original tunnel as built was designed by Sir Alexander Binnie and built by S. Pearson & Sons , between 1892 and 1897, for whom Ernest William Moir
17415-508: Was originally opened as a single bore in 1897 by the Prince of Wales as a major transport project to improve commerce and trade in London's East End . It carried a mix of foot, cycle, horse-drawn and vehicular traffic. By the 1930s, capacity was becoming inadequate. A second bore opened in 1967 to relieve congestion, handling southbound traffic while the earlier 19th century tunnel handled northbound traffic. The northern approach takes traffic from
17550-424: Was quick in adopting arc lighting, and by 1890 over 130,000 were in operation in the US, commonly installed in exceptionally tall moonlight towers . Arc lights had two major disadvantages. First, they emit an intense and harsh light which, although useful at industrial sites like dockyards, was discomforting in ordinary city streets. Second, they are maintenance-intensive, as carbon electrodes burn away swiftly. With
17685-610: Was subject to minor redefining and widening of the main channel around Oxford, Abingdon and Marlow before 1850, when further cuts to ease navigation reduced distances further. Molesey faces Hampton , and in Greater London the Thames passes Hampton Court Palace , Surbiton , Kingston upon Thames , Teddington , Twickenham , Richmond (with a famous view of the Thames from Richmond Hill), Syon House , Kew , Brentford , Chiswick , Barnes , Hammersmith , Fulham , Putney , Wandsworth , Battersea and Chelsea . In central London ,
17820-486: Was the first city in the Austrian-Hungarian Monarchy to have electric public lighting, on 12 November 1884; 731 lamps were used. On 9 December 1882, Brisbane , Queensland, Australia was introduced to electricity by having a demonstration of 8 arc lights, erected along Queen Street Mall . The power to supply these arc lights was taken from a 10 hp Crompton DC generator driven by a Robey steam engine in
17955-711: Was the first city in the Southern Hemisphere and in Africa to have electric streetlights – with 16 first lit on 2 September 1882. The system was only the second in the world, after that of Philadelphia , to be powered municipally. In Central America, San Jose , Costa Rica, lit 25 lamps powered by a hydroelectric plant on 9 August 1884. Nuremberg was the first city in Germany to have electric public lighting on 7 June 1882, followed by Berlin on 20 September 1882 (Potsdamer Platz only). Temesvár (Timișoara in present-day Romania)
18090-427: Was the lead engineer. It was constructed using a Greathead tunnelling shield and compressed air techniques (named after its inventor, James Henry Greathead ). It was lit by three rows of incandescent street lights . To clear the site in Greenwich, more than 600 people had to be rehoused, and a house reputedly once owned by Sir Walter Raleigh had to be demolished. The workforce was largely drawn from outside London;
18225-602: Was used to light the worsted mill in the village of Dolphinholme in North Lancashire. The remains of the works, including a chimney and gas plant, have been put on the National Heritage List for England. Clegg's installation saved the building's owners the cost of up to 1,500 candles every night. It also lit the mill owner's house and the street of millworkers' houses in Dolphinholme. In 1812, Parliament granted
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