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Radiation Exposure Compensation Act

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The United States Radiation Exposure Compensation Act ( RECA ) is a federal statute implemented in 1990, set to expire in July 2024, providing for the monetary compensation of people, including atomic veterans , who contracted cancer and a number of other specified diseases as a direct result of their exposure to atmospheric nuclear testing undertaken by the United States during the Cold War as residents, or their exposure to radon gas and other radioactive isotopes while undertaking uranium mining , milling or the transportation of ore.

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87-415: The Act has been providing the following remunerations, unchanged since 1990 despite inflation: In all cases there are additional requirements which must be satisfied (proof of exposure, establishment of duration of employment, establishment of certain medical conditions, etc.). In 2022, the law was to expire, and President Joe Biden extended the filing deadline for another two years. Attempts to enact

174-529: A causal relation . General relativity does not address the nature of time for extremely small intervals where quantum mechanics holds. In quantum mechanics, time is treated as a universal and absolute parameter, differing from general relativity's notion of independent clocks. The problem of time consists of reconciling these two theories. As of 2024, there is no generally accepted theory of quantum general relativity. Generally speaking, methods of temporal measurement, or chronometry , take two distinct forms:

261-459: A US$ 150 million trust fund. The fund was intended to generate US$ 18 million a year, which would be payable to claimants on an agreed-upon schedule. If the US$ 18 million a year generated by the fund was not enough to cover claims, the principal of the fund could be used. A Marshall Islands Nuclear Claims Tribunal was established to adjudicate claims. In 2000, the tribunal made a compensation award to

348-611: A calendar based solely on twelve lunar months. Lunisolar calendars have a thirteenth month added to some years to make up for the difference between a full year (now known to be about 365.24 days) and a year of just twelve lunar months. The numbers twelve and thirteen came to feature prominently in many cultures, at least partly due to this relationship of months to years. Other early forms of calendars originated in Mesoamerica, particularly in ancient Mayan civilization. These calendars were religiously and astronomically based, with 18 months in

435-549: A concrete dome (the Runit Dome) was built on Runit Island to deposit radioactive soil and debris. The Runit Dome is deteriorating and could be breached by a typhoon, though the sediments in the lagoon are even more radioactive than those which are contained. The U.S. government referred to the atoll as "Eniwetok" until 1974, when it changed its official spelling to "Enewetak" (along with many other Marshall Islands place names , to more properly reflect their pronunciation by

522-620: A dimension. Isaac Newton said that we are merely occupying time, he also says that humans can only understand relative time . Relative time is a measurement of objects in motion. The anti-realists believed that time is merely a convenient intellectual concept for humans to understand events. This means that time was useless unless there were objects that it could interact with, this was called relational time . René Descartes , John Locke , and David Hume said that one's mind needs to acknowledge time, in order to understand what time is. Immanuel Kant believed that we can not know what something

609-403: A head in the famous Leibniz–Clarke correspondence . Philosophers in the 17th and 18th century questioned if time was real and absolute, or if it was an intellectual concept that humans use to understand and sequence events. These questions lead to realism vs anti-realism; the realists believed that time is a fundamental part of the universe, and be perceived by events happening in a sequence, in

696-407: A hundred minutes of a hundred seconds, which marked a deviation from the base 12 ( duodecimal ) system used in many other devices by many cultures. The system was abolished in 1806. A large variety of devices have been invented to measure time. The study of these devices is called horology . An Egyptian device that dates to c.  1500 BC , similar in shape to a bent T-square , measured

783-577: A number or calendar date to an instant (point in time), quantifying the duration of a time interval, and establishing a chronology (ordering of events). In modern times, several time specifications have been officially recognized as standards, where formerly they were matters of custom and practice. The invention in 1955 of the caesium atomic clock has led to the replacement of older and purely astronomical time standards such as sidereal time and ephemeris time , for most practical purposes, by newer time standards based wholly or partly on atomic time using

870-488: A prime motivation in navigation and astronomy . Time is also of significant social importance, having economic value (" time is money ") as well as personal value, due to an awareness of the limited time in each day and in human life spans . The concept of time can be complex. Multiple notions exist and defining time in a manner applicable to all fields without circularity has consistently eluded scholars. Nevertheless, diverse fields such as business, industry, sports,

957-482: A recurring pattern of ages or cycles, where events and phenomena repeated themselves in a predictable manner. One of the most famous examples of this concept is found in Hindu philosophy , where time is depicted as a wheel called the " Kalachakra " or "Wheel of Time." According to this belief, the universe undergoes endless cycles of creation, preservation, and destruction. Similarly, in other ancient cultures such as those of

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1044-516: A year and 20 days in a month, plus five epagomenal days at the end of the year. The reforms of Julius Caesar in 45 BC put the Roman world on a solar calendar . This Julian calendar was faulty in that its intercalation still allowed the astronomical solstices and equinoxes to advance against it by about 11 minutes per year. Pope Gregory XIII introduced a correction in 1582; the Gregorian calendar

1131-536: A year, to persons who "died from, has or has had, leukaemia , thyroid cancer , bone cancer or any other cancer identified by an advisory board on the health effects of radiation and uranium exposure". Fallout areas listed by the bill included counties in Utah and Nevada: Utah counties included Millard, Sevier, Beaver, Iron, Washington, Kane, Garfiend, Piute, Wayne, San Juan, Grand, Carbon, Emery, Duchesne, Uintah, San Pete and Juab. Nevada's "affected areas" were listed as

1218-765: Is a fundamental concept to define other quantities, such as velocity . To avoid a circular definition, time in physics is operationally defined as "what a clock reads", specifically a count of repeating events such as the SI second . Although this aids in practical measurements, it does not address the essence of time. Physicists developed the concept of the spacetime continuum, where events are assigned four coordinates: three for space and one for time. Events like particle collisions , supernovas , or rocket launches have coordinates that may vary for different observers, making concepts like "now" and "here" relative. In general relativity , these coordinates do not directly correspond to

1305-454: Is a theoretical ideal scale realized by TAI. Geocentric Coordinate Time and Barycentric Coordinate Time are scales defined as coordinate times in the context of the general theory of relativity. Barycentric Dynamical Time is an older relativistic scale that is still in use. Many ancient cultures, particularly in the East, had a cyclical view of time. In these traditions, time was often seen as

1392-430: Is credited to Egyptians because of their sundials, which operated on a duodecimal system. The importance of the number 12 is due to the number of lunar cycles in a year and the number of stars used to count the passage of night. The most precise timekeeping device of the ancient world was the water clock , or clepsydra , one of which was found in the tomb of Egyptian pharaoh Amenhotep I . They could be used to measure

1479-500: Is dominated by temporality ( kala ), everything within time is subject to change and decay. Overcoming pain and death requires knowledge that transcends temporal existence and reveals its eternal foundation. Two contrasting viewpoints on time divide prominent philosophers. One view is that time is part of the fundamental structure of the universe  – a dimension independent of events, in which events occur in sequence . Isaac Newton subscribed to this realist view, and hence it

1566-498: Is in Byrhtferth 's Enchiridion (a science text) of 1010–1012, where it was defined as 1/564 of a momentum (1 1 ⁄ 2 minutes), and thus equal to 15/94 of a second. It was used in the computus , the process of calculating the date of Easter. As of May 2010 , the smallest time interval uncertainty in direct measurements is on the order of 12 attoseconds (1.2 × 10 seconds), about 3.7 × 10 Planck times . The second (s)

1653-812: Is kept within 0.9 second of UT1 by the introduction of one-second steps to UTC, the leap second . The Global Positioning System broadcasts a very precise time signal based on UTC time. The surface of the Earth is split into a number of time zones . Standard time or civil time in a time zone deviates a fixed, round amount, usually a whole number of hours, from some form of Universal Time, usually UTC. Most time zones are exactly one hour apart, and by convention compute their local time as an offset from UTC. For example, time zones at sea are based on UTC. In many locations (but not at sea) these offsets vary twice yearly due to daylight saving time transitions. Some other time standards are used mainly for scientific work. Terrestrial Time

1740-411: Is neither an event nor a thing, and thus is not itself measurable nor can it be travelled. Furthermore, it may be that there is a subjective component to time, but whether or not time itself is "felt", as a sensation, or is a judgment, is a matter of debate. In Philosophy, time was questioned throughout the centuries; what time is and if it is real or not. Ancient Greek philosophers asked if time

1827-483: Is not rather than what it is, an approach similar to that taken in other negative definitions . However, Augustine ends up calling time a "distention" of the mind (Confessions 11.26) by which we simultaneously grasp the past in memory, the present by attention, and the future by expectation. Isaac Newton believed in absolute space and absolute time; Leibniz believed that time and space are relational. The differences between Leibniz's and Newton's interpretations came to

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1914-655: Is qualitative, as opposed to quantitative. In Greek mythology, Chronos (ancient Greek: Χρόνος) is identified as the Personification of Time. His name in Greek means "time" and is alternatively spelled Chronus (Latin spelling) or Khronos. Chronos is usually portrayed as an old, wise man with a long, gray beard, such as "Father Time". Some English words whose etymological root is khronos/chronos include chronology , chronometer , chronic , anachronism , synchronise , and chronicle . Rabbis sometimes saw time like "an accordion that

2001-588: Is seen as progressing in a straight line from past to future without repetition. In general, the Islamic and Judeo-Christian world-view regards time as linear and directional , beginning with the act of creation by God. The traditional Christian view sees time ending, teleologically, with the eschatological end of the present order of things, the " end time ". In the Old Testament book Ecclesiastes , traditionally ascribed to Solomon (970–928 BC), time (as

2088-447: Is sometimes referred to as Newtonian time . The opposing view is that time does not refer to any kind of "container" that events and objects "move through", nor to any entity that "flows", but that it is instead part of a fundamental intellectual structure (together with space and number) within which humans sequence and compare events. This second view, in the tradition of Gottfried Leibniz and Immanuel Kant , holds that time

2175-402: Is the SI base unit. A minute (min) is 60 seconds in length (or, rarely, 59 or 61 seconds when leap seconds are employed), and an hour is 60 minutes or 3600 seconds in length. A day is usually 24 hours or 86,400 seconds in length; however, the duration of a calendar day can vary due to Daylight saving time and Leap seconds . A time standard is a specification for measuring time: assigning

2262-401: Is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past , through the present , and into the future . It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in

2349-433: Is the primary framework for understanding how spacetime works. Through advances in both theoretical and experimental investigations of spacetime, it has been shown that time can be distorted and dilated , particularly at the edges of black holes . Throughout history, time has been an important subject of study in religion, philosophy, and science. Temporal measurement has occupied scientists and technologists and has been

2436-707: Is the second-westernmost atoll of the Ralik Chain and is 305 kilometers (190 mi) west from Bikini Atoll . It was held by the Japanese from 1914 until its capture by the United States in February 1944 during World War II , then became Naval Base Eniwetok . Nuclear testing by the US totaling the equivalent of over 30 megatons of TNT took place during the Cold War ; in 1977–1980,

2523-675: Is unless we experience it first hand. Time is not an empirical concept. For neither co-existence nor succession would be perceived by us, if the representation of time did not exist as a foundation a priori . Without this presupposition, we could not represent to ourselves that things exist together at one and the same time, or at different times, that is, contemporaneously, or in succession. Enewetak Atoll Enewetak Atoll ( / ɛ ˈ n iː w ə ˌ t ɔː k , ˌ ɛ n ɪ ˈ w iː t ɔː k / ; also spelled Eniwetok Atoll or sometimes Eniewetok ; Marshallese : Ānewetak , [ænʲeːwɛːdˠɑk] , or Āne-wātak , [ænʲeːwæːdˠɑk] ; known to

2610-569: The Clock of the Long Now . They can be driven by a variety of means, including gravity, springs, and various forms of electrical power, and regulated by a variety of means such as a pendulum . Alarm clocks first appeared in ancient Greece around 250 BC with a water clock that would set off a whistle. This idea was later mechanized by Levi Hutchins and Seth E. Thomas . A chronometer is a portable timekeeper that meets certain precision standards. Initially,

2697-482: The Marshall Islanders ). Enewetak Atoll formed atop a seamount . The seamount was formed in the late Cretaceous . This seamount is now about 1,400 meters (4,600 ft) below sea level. It is made of basalt , and its depth is due to a general subsidence of the entire region and not because of erosion . Enewetak has a mean elevation above sea level of 3 meters (9.8 ft). Humans have inhabited

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2784-425: The calendar , a mathematical tool for organising intervals of time, and the clock , a physical mechanism that counts the passage of time. In day-to-day life, the clock is consulted for periods less than a day, whereas the calendar is consulted for periods longer than a day. Increasingly, personal electronic devices display both calendars and clocks simultaneously. The number (as on a clock dial or calendar) that marks

2871-493: The conscious experience . Time is often referred to as a fourth dimension , along with three spatial dimensions . Time is one of the seven fundamental physical quantities in both the International System of Units (SI) and International System of Quantities . The SI base unit of time is the second , which is defined by measuring the electronic transition frequency of caesium atoms. General relativity

2958-399: The radioactive cloud to test onboard samples. B-17 mother ships controlled the drones while flying within visual distance of them. In all, 16 to 20 B-17s took part in this operation, of which half were controlling aircraft and half were drones. To examine the explosion clouds of the nuclear bombs in 1957/58, several rockets (mostly from rockoons ) were launched. One USAF airman Jimmy Robinson

3045-424: The " downwinders " provisions, changed some of the recognized illnesses, and lowered the threshold radiation exposure for uranium miners. In 2002, additional amendments were passed as part of another bill, primarily fixing a number of draftsmanship errors in the previous amendments which had accidentally removed certain geographic areas from the original act and clarified a number of points. In 2019, H.R. 3783

3132-547: The 110th Naval Construction Battalion arrived on February 21 and 27 to begin construction of Stickell Field. It had two taxiways and a 6,800-by-400-foot (2,070 by 120 m) runway. In June 1945, the 67th CB arrived to build a 35,000 man recreation center to be turned over to CBMU 608. In 1950, John C. Woods , who executed the Nazi war criminals convicted at the Nuremberg Trials , was accidentally electrocuted there. After

3219-615: The 110th Naval Construction Battalion expanded the base, building a coral-surfaced parking area and shops for minor aircraft and engine overhaul. A marine ways was installed on a Japanese pier and boat-repair shops were also erected. US Navy and Marine units based at Parry Island included: From 1958 through 1960 the United States installed the Missile Impact Location System (MILS) in the Navy managed Pacific Missile Range, later

3306-529: The Air Force managed Western Range , to localize the splash downs of test missile nose cones. MILS was developed and installed by the same entities that had completed the first phase of the Atlantic and U.S. West Coast SOSUS systems. A MILS installation, consisting of both a target array for precision location and a broad ocean area system for good positions outside the target area, was installed at Eniwetok as part of

3393-668: The Hebrew word עידן, זמן iddan (age, as in "Ice age") zĕman(time) is often translated) is a medium for the passage of predestined events. (Another word, زمان" זמן" zamān , meant time fit for an event , and is used as the modern Arabic , Persian , and Hebrew equivalent to the English word "time".) The Greek language denotes two distinct principles, Chronos and Kairos . The former refers to numeric, or chronological, time. The latter, literally "the right or opportune moment", relates specifically to metaphysical or Divine time. In theology, Kairos

3480-630: The Japanese as Brown Atoll or Brown Island ; Japanese : ブラウン環礁 ) is a large coral atoll of 40 islands in the Pacific Ocean and with its 296 people (as of 2021) forms a legislative district of the Ralik Chain of the Marshall Islands . With a land area total less than 5.85 square kilometers (2.26 sq mi), it is no higher than 5 meters (16.4 ft) and surrounds a deep central lagoon , 80 kilometers (50 mi) in circumference . It

3567-520: The Mayans, Aztecs, and Chinese, there were also beliefs in cyclical time, often associated with astronomical observations and calendars. These cultures developed complex systems to track time, seasons, and celestial movements, reflecting their understanding of cyclical patterns in nature and the universe. The cyclical view of time contrasts with the linear concept of time more common in Western thought, where time

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3654-474: The Middle Dutch word klocke which, in turn, derives from the medieval Latin word clocca , which ultimately derives from Celtic and is cognate with French, Latin, and German words that mean bell . The passage of the hours at sea was marked by bells and denoted the time (see ship's bell ). The hours were marked by bells in abbeys as well as at sea. Clocks can range from watches to more exotic varieties such as

3741-514: The SI second. International Atomic Time (TAI) is the primary international time standard from which other time standards are calculated. Universal Time (UT1) is mean solar time at 0° longitude, computed from astronomical observations. It varies from TAI because of the irregularities in Earth's rotation. Coordinated Universal Time (UTC) is an atomic time scale designed to approximate Universal Time. UTC differs from TAI by an integral number of seconds. UTC

3828-550: The U.S. exhumed the bodies of United States servicemen killed in the Battle of Enewetak and returned them to the United States to be re-buried by their families. 43 nuclear tests were fired at Enewetak from 1948 to 1958. The first hydrogen bomb test, code-named Ivy Mike , occurred in late 1952 as part of Operation Ivy ; it vaporized the islet of Elugelab , It also created two new elements : Fermium and Einsteinium . This test included B-17 Flying Fortress drones to fly through

3915-517: The United States." In some cases, it proved to be extremely difficult for people to receive their compensation, including cases filed by widows of uranium miners. Because many uranium miners were Native Americans , they did not have standard marriage licenses required to establish a legal connection to the deceased. In 1999, revisions were published in the Federal Register to assist in making award claims. Many mine workers and their families found

4002-1301: The act had been approved (with 9,869 denied), expending a total of $ 1,707,998,044. As of 19 November 2013, 43,068 claims were filed, 11,619 claims were denied, 748 claims were pending and 30,701 were awarded. These numbers did not include the Marshall Islands. As of 2 March 2015, over $ 2 billion in total compensation had been paid to 32,000 successful claimants under the Act. As of 16 March 2016, successful claims had been awarded to 19,555 downwinders, 3,963 onsite participants, 6,214 uranium miners, 1,673 uranium millers and 328 ore transporters. As of 20 April 2018, 34,372 claims in total had been approved with total compensation paid at $ 2,243,205,380. As of 12 January 2023, 40,274 claims have been approved with total compensation paid at $ 2,598,374,306. Successful claims include: 25,663 downwinders, 5,388 onsite participants, 6,896 uranium miners, 1,921 uranium millers and 406 ore transporters. As of 15 July 2024, 41,900 claims have been approved with total compensation paid at $ 2,693,750,307. Successful claims include: 26,863 downwinders, 5,665 onsite participants, 6,996 uranium miners, 1,956 uranium millers and 420 ore transporters. Time Time

4089-399: The anchorage at Enewetok became a major US Naval Advance Base with Service Squadron 4 and Service Squadron 10 stationed in the lagoon. The daily average of ships present during the first half of July 1944 was 488; during the second half of July, the daily average number of ships at Enewetak was 283. Naval Base Eniwetok was part of the vast Naval Base Marshall Islands . US Navy Seabees of

4176-458: The atoll since about 1,000 B.C. The islands were first settled by Austronesian islanders. The first European colonizers to Enewetak, Spanish explorer Álvaro de Saavedra Cerón , arrived on 10 October 1529. He called the island " Los Jardines " (The Gardens). In 1794, sailors aboard the British merchant sloop Walpole called the islands "Brown's Range" (thus, the Japanese name "Brown Atoll"). It

4263-408: The bill was finally enacted. The Radiation Exposure Compensation Act was passed by Congress on October 5, 1990, and signed into law by President George H. W. Bush on October 15, 1990. In the successful bill it was written that Congress "apologizes on behalf of the nation" to individuals who were "involuntarily subjected to increased risk of injury and disease to serve the national security interests of

4350-523: The causal structure of events. Instead, the spacetime interval is calculated and classified as either space-like or time-like, depending on whether an observer exists that would say the events are separated by space or by time. Since the time required for light to travel a specific distance is the same for all observers—a fact first publicly demonstrated by the Michelson–Morley experiment —all observers will consistently agree on this definition of time as

4437-608: The cleanup project was US$ 239 million. The United States government declared the southern and western islands in the atoll safe for habitation in 1980, and residents of Enewetak returned that same year. The military members who participated in that cleanup mission are suffering from many health issues, but the U.S. Government refused to provide health coverage until 2022 with the passage of the Honoring our PACT Act . The 2000 environmental restoration award included funds for additional cleanup of radioactivity on Enewetak. Rather than scrape

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4524-413: The community. Men from the 110th Naval Construction Battalion arrived on Eniwetok between 21 and 27 February 1944 and began clearing the island for construction of a bomber airfield. A 2,100-meter (6,900 ft) by 120-meter (390 ft) runway with taxiways and supporting facilities was built. The first plane landed on 11 March. By 5 April the first operational bombing mission was conducted. The base

4611-519: The counties of White Pine, Nye, Lander, Lincoln and Eureka. The Bill as drafted, would have also compensated ranchers whose sheep died following nuclear weapons tests "Harry" (13 May 1959) and "Nancy" (24 May 1953). Ten years later, Wayne Owens ( D – UT introduced H.R. 2372 , which added uranium miners who worked in Wyoming to the list, and extended the eligible date rate for employed miners to between 1947 and 1971. Twelve years transpired before

4698-414: The dome, causing radioactive material to leak out. Section 177 of the 1983 Compact of Free Association between the governments of the United States and the Marshall Islands establishes a process for Marshallese to make a claim against the United States government as a result of damage and injury caused by nuclear testing. That same year, an agreement was signed to implement Section 177, which established

4785-715: The east, no aviation personnel were stationed there and the island had only token defenses. When the Gilberts fell to the United States, the Imperial Japanese Army assigned defense of the atoll to the 1st Amphibious Brigade , formed from the 3rd Independent Garrison, which had previously been stationed in Manchukuo . The 1st Amphibious Brigade arrived on January 4, 1944. Some 2,586 of its 3,940 men were left to defend Eniwetok Atoll, supplemented by aviation personnel, civilian employees, and laborers. However, they were unable to finish

4872-659: The end of 2008 and May 2010. Due to stock market losses, payments rates that have outstripped fund income, and other issues, the fund was nearly exhausted, as of May 2010, and unable to make any additional awards or payments. A lawsuit by Marshallese arguing that "changed circumstances" made Nuclear Claims Tribunal unable to make just compensation was dismissed by the Supreme Court of the United States in April 2010. Marshall Islands Public School System operates Enewetak Elementary School. Marshall Islands High School on Majuro serves

4959-581: The end of World War II, Enewetak came under the control of the United States as part of the Trust Territory of the Pacific Islands , until the independence of the Marshall Islands in 1986. During its tenure, the United States evacuated the local residents many times, often involuntarily. The atoll was used for nuclear testing , as part of the Pacific Proving Grounds . Before testing commenced,

5046-517: The events of the abbeys and monasteries of the Middle Ages. Richard of Wallingford (1292–1336), abbot of St. Alban's abbey, famously built a mechanical clock as an astronomical orrery about 1330. Great advances in accurate time-keeping were made by Galileo Galilei and especially Christiaan Huygens with the invention of pendulum-driven clocks along with the invention of the minute hand by Jost Burgi. The English word clock probably comes from

5133-678: The film Oppenheimer brought renewed attention to the test, the United States Senate approved the New Mexico downwinders' inclusion in the RECA amendment. To become law, the bill would also need to be passed by the United States House of Representatives . It was initially expected that hundreds of compensation claims would be paid under the Act, a figure which later proved to be a gross underestimate. As of 15 July 2012, 25,804 claims under

5220-439: The first mechanical clocks driven by an escapement mechanism. The hourglass uses the flow of sand to measure the flow of time. They were used in navigation. Ferdinand Magellan used 18 glasses on each ship for his circumnavigation of the globe (1522). Incense sticks and candles were, and are, commonly used to measure time in temples and churches across the globe. Water clocks, and, later, mechanical clocks, were used to mark

5307-524: The fortifications before the American attack came in February. During the ensuing Battle of Eniwetok , the Americans captured Enewetak in a five-day amphibious operation. Fighting mainly took place on Engebi Islet, site of the most important Japanese installation, although some combat occurred on the main islet of Enewetak itself and on Parry Island, where there was a Japanese seaplane base. Following its capture,

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5394-472: The frequency of electronic transitions in certain atoms to measure the second. One of the atoms used is caesium ; most modern atomic clocks probe caesium with microwaves to determine the frequency of these electron vibrations. Since 1967, the International System of Measurements bases its unit of time, the second, on the properties of caesium atoms. SI defines the second as 9,192,631,770 cycles of

5481-438: The hours even at night but required manual upkeep to replenish the flow of water. The ancient Greeks and the people from Chaldea (southeastern Mesopotamia) regularly maintained timekeeping records as an essential part of their astronomical observations. Arab inventors and engineers, in particular, made improvements on the use of water clocks up to the Middle Ages. In the 11th century, Chinese inventors and engineers invented

5568-463: The islands with Portland cement and buried it in an atomic blast crater on the northern end of the atoll's Runit Island . The material was placed in the 9.1-meter (30 ft) deep, 110-meter (360 ft) wide crater created by the May 5, 1958, " Cactus " nuclear weapons test. A dome composed of 358 concrete panels, each 46 centimeters (18 in) thick, was constructed over the material. The final cost of

5655-555: The legislation can be traced back to the late 1970s. In its fifth draft, a Bill entitled Radiation Exposure Compensation Act of 1979 was sponsored by Senator Ted Kennedy of Massachusetts. The Bill intended to make compensation available to persons exposed to fallout from nuclear weapons testing and for living uranium miners (or their survivors) who had worked in Utah, Colorado, New Mexico and Arizona between 1 January 1947 and 31 December 1961. The Bill proposed to pay compensation to persons who lived within prescribed areas for at least

5742-480: The lung, pulmonary fibrosis , cor pulmonale related to fibrosis of the lung, silicosis or pneumoconiosis following their employment. In the case of uranium mill workers and ore transporters, renal cancer and chronic renal disease are also compensable conditions. In 2000, amendments were passed which added two new claimant categories like uranium mill and ore workers, both eligible to receive as much money as uranium miners, added additional geographic regions to

5829-573: The nature of time. Plato , in the Timaeus , identified time with the period of motion of the heavenly bodies. Aristotle , in Book IV of his Physica defined time as 'number of movement in respect of the before and after'. In Book 11 of his Confessions , St. Augustine of Hippo ruminates on the nature of time, asking, "What then is time? If no one asks me, I know: if I wish to explain it to one that asketh, I know not." He begins to define time by what it

5916-505: The occurrence of a specified event as to hour or date is obtained by counting from a fiducial epoch – a central reference point. Artifacts from the Paleolithic suggest that the moon was used to reckon time as early as 6,000 years ago. Lunar calendars were among the first to appear, with years of either 12 or 13 lunar months (either 354 or 384 days). Without intercalation to add days or months to some years, seasons quickly drift in

6003-615: The paperwork difficult and qualifications narrow and were declined compensation. People living in the surrounding area near Trinity (the first nuclear test) site in New Mexico were, unlike the Nevada test site, unaware of the project and not included in the 1990 Radiation Exposure Compensation Act support for affected downwinders . The Act provides the following remunerations, as of 2023, unchanged since 1990 despite inflation: In order to be eligible for compensation, an affected uranium industry worker must have developed lung cancer , fibrosis of

6090-419: The passage of time from the shadow cast by its crossbar on a nonlinear rule. The T was oriented eastward in the mornings. At noon, the device was turned around so that it could cast its shadow in the evening direction. A sundial uses a gnomon to cast a shadow on a set of markings calibrated to the hour. The position of the shadow marks the hour in local time . The idea to separate the day into smaller parts

6177-444: The people of Enewetak consisting of US$ 107.8 million for environmental restoration; US$ 244 million in damages to cover economic losses caused by loss of access and use of the atoll; and US$ 34 million for hardship and suffering. In addition, as of the end of 2008, another US$ 96.658 million in individual damage awards were made. Only US$ 73.526 million of the individual claims award has been paid, however, and no new awards were made between

6264-664: The potassium decontamination project was US$ 103.3 million. A report by the US Congressional Research Service projects that the majority of the atoll will be fit for human habitation by 2026–2027, after nuclear decay, de-contamination and environmental remediation efforts create sufficient dose reductions. However, in November 2017, the Australian Broadcasting Corporation reported that rising sea levels caused by climate change are seeping inside

6351-618: The radiation that corresponds to the transition between two electron spin energy levels of the ground state of the Cs atom. Today, the Global Positioning System in coordination with the Network Time Protocol can be used to synchronize timekeeping systems across the globe. In medieval philosophical writings, the atom was a unit of time referred to as the smallest possible division of time. The earliest known occurrence in English

6438-572: The same medical benefits as Department of Energy workers, eligible under the Energy Employees Occupational Illness Compensation Program . In 2022, the law was to expire, but President Joe Biden extended the filing deadline for another two years until July 2024. For many years Senator Ben Ray Luján and other members of Congress have attempted to get compensation for those affected by the Trinity test. After

6525-576: The sciences, and the performing arts all incorporate some notion of time into their respective measuring systems . Traditional definitions of time involved the observation of periodic motion such as the apparent motion of the sun across the sky, the phases of the moon, and the passage of a free-swinging pendulum. More modern systems include the Global Positioning System , other satellite systems, Coordinated Universal Time and mean solar time . Although these systems differ from one another, with careful measurements they can be synchronized. In physics, time

6612-402: The start of World War II. The atoll, together with other parts of Marshall Islands located to the west of 164°E, was placed under the governance of Pohnpei district during the Japanese administration period, separately from the rest of the Marshall Islands. In November 1942, the Japanese built an airfield on Engebi Island. As they used it only for refueling planes between Truk and islands to

6699-580: The term was used to refer to the marine chronometer , a timepiece used to determine longitude by means of celestial navigation , a precision first achieved by John Harrison . More recently, the term has also been applied to the chronometer watch , a watch that meets precision standards set by the Swiss agency COSC . The most accurate timekeeping devices are atomic clocks , which are accurate to seconds in many millions of years, and are used to calibrate other clocks and timekeeping instruments. Atomic clocks use

6786-428: The topsoil off, replace it with clean topsoil, and create another radioactive waste repository dome at some site on the atoll (a project estimated to cost US$ 947 million), most areas still contaminated on Enewetak were treated with potassium . Soil that could not be effectively treated for human use was removed and used as fill for a causeway connecting the two main islands of the atoll (Enewetak and Parry). The cost of

6873-480: Was an illusion to humans. Plato believed that time was made by the Creator at the same instant as the heavens. He also says that time is a period of motion of the heavenly bodies . Aristotle believed that time correlated to movement, that time did not exist on its own but was relative to motion of objects. He also believed that time was related to the motion of celestial bodies ; the reason that humans can tell time

6960-466: Was because of orbital periods and therefore there was a duration on time. The Vedas , the earliest texts on Indian philosophy and Hindu philosophy dating to the late 2nd millennium BC , describe ancient Hindu cosmology , in which the universe goes through repeated cycles of creation, destruction and rebirth, with each cycle lasting 4,320 million years. Ancient Greek philosophers , including Parmenides and Heraclitus , wrote essays on

7047-480: Was expanded and collapsed at will." According to Kabbalists , "time" is a paradox and an illusion . According to Advaita Vedanta , time is integral to the phenomenal world, which lacks independent reality. Time and the phenomenal world are products of maya , influenced by our senses, concepts, and imaginations. The phenomenal world, including time, is seen as impermanent and characterized by plurality, suffering, conflict, and division. Since phenomenal existence

7134-432: Was introduced to extend RECA to 2045, expand downwinder eligibility to include Idaho, Montana, New Mexico, Guam, and Colorado, to expand uranium worker eligibility to those who worked after 1971, until 1990, also covering people involved in the cleanup of Enewetak Atoll of the Marshall Islands from 1977-1981, increase the compensation to $ 150,000 for all claimants, and to allow people exposed to atmospheric testing to receive

7221-417: Was later named for Lieutenant John H. Stickell . In mid-September 1944 operations at Wrigley Airfield on Engebi Island were transferred to Eniwetok. US Navy and Marine units based at Eniwetok included: The airstrip is now abandoned and its surface partially covered by sand. The Imperial Japanese Navy had developed a seaplane base on Parry Island. Following its capture on 22 February, Seabee's from

7308-462: Was linear or cyclical and if time was endless or finite . These philosophers had different ways of explaining time; for instance, ancient Indian philosophers had something called the Wheel of Time. It is believed that there was repeating ages over the lifespan of the universe. This led to beliefs like cycles of rebirth and reincarnation . The Greek philosophers believe that the universe was infinite, and

7395-493: Was lost at sea during the tests. Robinson's F-84 Thunderjet crashed and sank 3.5 miles (5.6 km) short of the island. Robinson's body was never recovered. A radiological survey of Enewetak was conducted from 1972 to 1973. In 1977, the United States military began decontamination of Enewetak and other islands. During the three-year, US$ 100 million cleanup process, the military mixed more than 80,000 cubic meters (100,000 cu yd) of contaminated soil and debris from

7482-520: Was only slowly adopted by different nations over a period of centuries, but it is now by far the most commonly used calendar around the world. During the French Revolution , a new clock and calendar were invented as part of the dechristianization of France and to create a more rational system in order to replace the Gregorian calendar. The French Republican Calendar 's days consisted of ten hours of

7569-764: Was visited by about a dozen ships before the establishment of the German colony of the Marshall Islands in 1885. With the rest of the Marshalls, Enewetak was captured by the Imperial Japanese Navy in 1914, during World War I and mandated to the Empire of Japan by the League of Nations in 1920. The Japanese administered the island under the South Seas Mandate , but mostly left affairs in hands of traditional local leaders until

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