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77-431: The SwissFEL design is optimised to generate X-ray pulses in the wavelength range of 1 Å to 70 Å. With an overall length of just under 740 metres, the system configuration is relatively compact. Construction work for SwissFEL began in the spring of 2013. After completion of the building, installation of the technical components started at the beginning of 2015. The first pilot experiments were carried out in 2017. In 2018

154-453: A type designer to create customized typefaces for their exclusive use. Different periodicals design their publications, including their typography, to achieve a particular tone or style. For example, USA Today uses a bold, colorful, and comparatively modern style through their use of a variety of typefaces and colors; type sizes vary widely, and the newspaper's name is placed on a colored background. In contrast, The New York Times uses

231-541: A bar of platinum - iridium alloy, kept at the BIPM in Paris in a carefully controlled environment. Reliance on that material standard had led to an early error of about one part in 6000 in the tabulated wavelengths. Ångström took the precaution of having the standard bar he used checked against a standard in Paris, but the metrologist Henri Tresca reported it to be so incorrect that Ångström's corrected results were more in error than

308-415: A body of text can instantaneously reveal the mood the author intends to convey to its readers. The message that a body of text conveys has a direct relationship with the typeface that is chosen. Therefore, when a person focuses on typography and setting type, they must pay very close attention to the typeface they choose. Choosing the correct typeface for a body of text can only be done after thoroughly reading

385-605: A code point U+212B Å ANGSTROM SIGN for the angstrom symbol, which is accessible in HTML as the entity Å , Å , or Å . However, version 5 of the standard already deprecates that code point and has it normalized into the code for the Swedish letter U+00C5 Å LATIN CAPITAL LETTER A WITH RING ABOVE (HTML entity Å , Å , or Å ), which should be used instead. In older publications, where

462-436: A comparable scale in the entire world. X-ray lasers like SwissFEL can be used, for example, to study new materials for electronics with the aim of further advancing miniaturisation in this field. The course of catalytic reactions can be followed on the atomic level in order to optimise them and thus improve resource efficiency in environmental technology or the chemical industry. Biomedical scientists can observe in detail

539-431: A copper disk with a pulsed laser. The cloud of released electrons is accelerated and held together with an electrical field. They are guided into the linear accelerator, which further accelerates the electrons with alternating current at high frequency. The electrons now fly through the undulator, a stretch of dipole magnets in an alternating arrangement: This forces them onto a slalom course. With every change of direction,

616-405: A key difference. Much of the legibility research literature is atheoretical—various factors were tested individually or in combination (inevitably so, as the different factors are interdependent), but many tests lacked a model of reading or visual perception. Some typographers believe that the overall word shape ( Bouma ) is essential in readability and that the theory of parallel letter recognition

693-466: A material artifact, was not accurate enough for their work. So, around 1907 they defined their own unit of length, which they called "Ångström", based on the wavelength of a specific spectral line. It was only in 1960, when the metre was redefined in the same way, that the angstrom became again equal to 10 metre. Yet the angstrom was never part of the SI system of units, and has been increasingly replaced by

770-451: A minimum of distractions and anomalies, aims to produce clarity and transparency. Choice of typefaces is the primary aspect of text typography— prose fiction , non-fiction , editorial, educational, religious, scientific, spiritual, and commercial writing all have differing characteristics and requirements of appropriate typefaces (and their fonts or styles). For historic material, established text typefaces frequently are chosen according to

847-410: A more traditional approach, with fewer colors, less typeface variation, and more columns . Especially on the front page of newspapers and on magazine covers, headlines often are set in larger display typefaces to attract attention, and are placed near the masthead . Typography utilized to characterize text: Typography is intended to reveal the character of the text. Through the use of typography,

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924-466: A need for a separate unit of comparable size defined directly in terms of spectroscopy. In 1965, J.A. Bearden defined the Angstrom Star (symbol: Å*) as 0.202901 times the wavelength of the tungsten κ α 1 {\textstyle \kappa _{\alpha 1}} line. This auxiliary unit was intended to be accurate to within 5 parts per million of the version derived from

1001-412: A product. Legibility describes how easily individual characters can be distinguished from one another. It is described by Walter Tracy as "the quality of being decipherable and recognisable". For instance, if a b and an h , or a 3 and an 8 , are difficult to distinguish at small sizes, this is a problem of legibility. Typographers are concerned with legibility insofar as it is their job to select

1078-423: A scheme of historical genre acquired by a long process of accretion, with considerable overlap among historical periods. Contemporary books are more likely to be set with state-of-the-art "text romans" or "book romans" typefaces with serifs and design values echoing present-day design arts, which are closely based on traditional models such as those of Nicolas Jenson , Francesco Griffo (a punchcutter who created

1155-464: A surface by rolling the seal on wet clay. Typography was also implemented in the Phaistos Disc , an enigmatic Minoan printed item from Crete , which dates to between 1850 and 1600 B.C. It has been proposed that Roman lead pipe inscriptions were created with movable type printing, but German typographer Herbert Brekle recently dismissed this view. The essential criterion of type identity

1232-416: A wide variety of situations, including: Since digitization, typographical uses have spread to a wider range of applications, appearing on web pages, LCDs mobile phone screens, and hand-held video games. Traditionally, text is composed to create a readable, coherent, and visually satisfying block of type that works invisibly, without the awareness of the reader. Even distribution of typeset material, with

1309-412: Is about 0.5 angstroms. Visible light has wavelengths in the range of 4000–7000 Å. In the late 19th century, spectroscopists adopted 10 of a metre as a convenient unit to express the wavelengths of characteristic spectral lines ( monochromatic components of the emission spectrum ) of chemical elements . However, they soon realized that the definition of the metre at the time, based on

1386-412: Is also why large parts of the long building were covered with earth and gravel. Doing so created, at the same time, a so-called alkaline grassland biotope that serves as a natural habitat for many endangered plants and animals. SwissFEL essentially consists of four components: an electron source, a linear accelerator, an arrangement of undulators , and measuring stations. Electrons are set free from

1463-423: Is an accepted version of this page Typography is the art and technique of arranging type to make written language legible , readable and appealing when displayed. The arrangement of type involves selecting typefaces , point sizes , line lengths , line spacing , letter spacing , and spaces between pairs of letters . The term typography is also applied to the style, arrangement, and appearance of

1540-545: Is around 275 million Swiss francs. SwissFEL was built in the Würenlinger forest, near the PSI campus. There the temperature fluctuations and vibrations are particularly small, and this simplifies operations: The temperature in the beam channel may not deviate more than 0.1 degree from the ideal 24 degrees Celsius, because otherwise the slightest material expansions could distort the measurement results or thwart experiments entirely. This

1617-451: Is customary to insert a non-breaking space before a colon (:) or semicolon (;) in a sentence, while in English it is not. In typesetting, color is the overall density of the ink on the page, determined mainly by the typeface, but also by the word spacing, leading , and depth of the margins. Text layout, tone, or color of the set text, and the interplay of text with the white space of

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1694-450: Is more legible, although strong opinions exist. Other topics, such as justified vs. unjustified type, use of hyphens, and proper typefaces for people with reading difficulties such as dyslexia , continue to be debated. Legibility is usually measured through the speed of reading, with comprehension scores used to check for effectiveness (that is, not a rushed or careless read). For example, Miles Tinker , who published numerous studies from

1771-415: Is often used in the natural sciences and technology to express sizes of atoms , molecules , microscopic biological structures, and lengths of chemical bonds , arrangement of atoms in crystals , wavelengths of electromagnetic radiation , and dimensions of integrated circuit parts. The atomic (covalent) radii of phosphorus , sulfur , and chlorine are about 1 angstrom, while that of hydrogen

1848-407: Is often used to draw attention to a particular advertisement, combined with efficient use of color, shapes, and images. In the early twenty-first century, typography in advertising often reflects a company's brand . A brand may use typography to express its theme, personality, and message. Just by looking at the typeface, viewers can get an idea about the message and personality of the brand, which

1925-441: Is wrong, less important, or not the entire picture. Word shape differs by outline, influenced by ascending and descending elements of lowercase letters and enables reading the entire word without having to parse out each letter. Readability also may be compromised by letter-spacing , word spacing, or leading that is too tight or too loose. It may be improved when generous vertical space separates text lines, making it easier for

2002-463: The Digital Age , typography was a specialized occupation. Personal computers opened up typography to new generations of previously unrelated designers and lay users. As the capability to create typography has become ubiquitous, the application of principles and best practices developed over generations of skilled workers and professionals has diminished. The word typography in English derives from

2079-503: The Greek roots týpos 'type' + -graphía 'writing'. Although typically applied to printed, published, broadcast, and reproduced materials in contemporary times, all words, letters, symbols, and numbers written alongside the earliest naturalistic drawings by humans may be called typography. The word, typography , is derived from the Greek words τύπος typos 'form' or "impression" and γράφειν graphein 'to write', traces its origins to

2156-497: The International Astronomical Union ) defined the international angstrom as precisely 1/6438.4696 of the wavelength of that line (in dry air at 15 °C (hydrogen scale) and 760  mmHg under a gravity of 9.8067 m/s ). This definition was endorsed at the 7th General Conference on Weights and Measures (CGPM) in 1927, but the material definition of the metre was retained until 1960. From 1927 to 1960,

2233-430: The solar physics community, which adopted the unit and named it after him. It subsequently spread to the fields of astronomical spectroscopy , atomic spectroscopy , and then to other sciences that deal with atomic-scale structures. Although intended to correspond to 10  metres, that definition was not accurate enough for spectroscopy work. Until 1960 the metre was defined as the distance between two scratches on

2310-481: The 1930s to the 1960s, used a speed of reading test that required participants to spot incongruous words as an effectiveness filter. The Readability of Print Unit at the Royal College of Art under Professor Herbert Spencer with Brian Coe and Linda Reynolds did important work in this area. It was one of the centers that revealed the importance of the saccadic rhythm of eye movement for readability—in particular,

2387-468: The 1990s. His work caused an uproar in the design community due to his abandonment of standard practices in typeface selection, layout, and design. Experimental typography is said to place emphasis on expressing emotion, rather than having a concern for legibility while communicating ideas, hence considered bordering on being art. There are many facets to the expressive use of typography, and with those come many different techniques to help with visual aid and

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2464-599: The US National Institute of Standards and Technology (NIST). However, it is not mentioned in the 9th edition of the official SI standard, the "BIPM Brochure" (2019) or in the NIST version of the same, and BIPM officially discourages its use. The angstrom is also not included in the European Union's catalogue of units of measure that may be used within its internal market. For compatibility reasons, Unicode assigns

2541-407: The ability to take in (i.e., recognise the meaning of groups of) about three words at once and the physiognomy of the eye, which means the eye tires if the line required more than three or four of these saccadic jumps. More than this is found to introduce strain and errors in reading (e.g., doubling). The use of all-caps renders words indistinguishable as groups, all letters presenting a uniform line to

2618-475: The angstrom remained a secondary unit of length for use in spectroscopy, defined separately from the metre. In 1960, the metre itself was redefined in spectroscopic terms, which allowed the angstrom to be redefined as being exactly 0.1 nanometres. After the redefinition of the metre in spectroscopic terms, the Angstrom was formally redefined to be 0.1 nanometres. However, there was briefly thought to be

2695-548: The basic letterforms are more legible than typefaces that have been condensed, expanded, embellished, or abstracted. However, even a legible typeface can become unreadable through poor setting and placement, just as a less legible typeface can be made more readable through good design. Studies of both legibility and readability have examined a wide range of factors including type size and type design, comparing serif vs. sans-serif type, roman type vs. oblique type and italic type , line length , line spacing, color contrast,

2772-448: The brands are fully aware of and are tapping into the power of good typography. Typefaces used in advertisements convey different messages to the reader: classical ones are for a strong personality, while more modern ones may convey clean, neutral look. Bold typefaces are used for making statements and attracting attention. In any design, a balance has to be achieved between the visual impact and communication aspects. Digital technology in

2849-455: The bulk of a title has a more unfamiliar or unusual font, simpler sans-serif fonts will help complement the title while attracting more attention to the piece as a whole. In contemporary use, the practice and study of typography include a broad range, covering all aspects of letter design and application, both mechanical ( typesetting , type design , and typefaces) and manual ( handwriting and calligraphy ). Typographical elements may appear in

2926-472: The computer industry, leading to common misuse by the public of the term font when typeface is the proper term. "Experimental typography" is defined as the unconventional and more artistic approach to typeface selection. Francis Picabia was a Dada pioneer of this practice in the early twentieth century. David Carson is often associated with this movement, particularly for his work in Ray Gun magazine in

3003-744: The correct font to use. Brush script is an example of a font containing many characters that might be difficult to distinguish. The selection of cases influences the legibility of typography because using only uppercase letters (all-caps) reduces legibility. Readability refers to how easy it is to read the text as a whole, as opposed to the individual character recognition described by legibility. Use of margins, word and line spacing, and clear document structure all impact readability. Some fonts or font styles, for instance sans-serif fonts, are considered to have low readability and so are unsuited for large quantities of prose. Legibility "refers to perception" (being able to see as determined by physical limitations of

3080-626: The design of right-hand edge (for example, justification , straight right hand edge) vs. ragged right, and whether text is hyphenated . Justified copy must be adjusted tightly during typesetting to prevent loss of readability, something beyond the capabilities of typical personal computers. Legibility research has been published since the late nineteenth century. Although there often are commonalities and agreement on many topics, others often create poignant areas of conflict and variation of opinion. For example, Alex Poole asserts that no one has conclusively answered which typeface style, serif or sans serif,

3157-431: The details of letter design are magnified. Color is used for its emotional effect in conveying the tone and nature of subject matter. Display typography encompasses: Typography has long been a vital part of promotional material and advertising . Designers often use typefaces to set a theme and mood in an advertisement (for example, using bold, large text to convey a particular message to the reader). Choice of typeface

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3234-497: The development of typesetting systems. Although typography has evolved significantly from its origins, it is a largely conservative art that tends to cleave closely to tradition. This is because legibility is paramount, and so the typefaces that are the most readable usually are retained. In addition, the evolution of typography is inextricably intertwined with lettering by hand and related art forms, especially formal styles, which thrived for centuries preceding typography, and so

3311-462: The electrons emit X-ray light. This produces an X-ray beam with laser-like properties, which can be used for experiments in the measuring stations. The X-ray beam reaches up to 10 gigawatts of power and is pulsed extremely rapidly: up to 100 flashes per second, each lasting only 1 to 60 femtoseconds. The pulses are so bright that they can be used to produce films of the movements of atoms and molecules. There are only four other X-ray laser facilities on

3388-487: The end of the twentieth century was to pair a sans-serif typeface for headings with a high-performance serif typeface of matching style for the text of an article. Typesetting conventions are modulated by orthography and linguistics , word structures, word frequencies, morphology , phonetic constructs and linguistic syntax . Typesetting conventions also are subject to specific cultural conventions. For example, in French it

3465-428: The evolution of typography must be discussed with reference to this relationship. In the nascent stages of European printing , the typeface ( blackletter , or Gothic) was designed in imitation of the popular hand-lettering styles of scribes . Initially, this typeface was difficult to read, because each letter was set in place individually and made to fit tightly into the allocated space. The art of manuscript writing,

3542-464: The eye to distinguish one line from the next, or previous line. Poorly designed typefaces and those that are too tightly or loosely fitted also may be less legible. Underlining also may reduce readability by eliminating the recognition effect contributed by the descending elements of letters. Periodical publications, especially newspapers and magazines, use typographical elements to achieve an attractive, distinctive appearance, to aid readers in navigating

3619-435: The eye), and readability "refers to comprehension" (understanding the meaning). Good typographers and graphic designers aim to achieve excellence in both. "The typeface chosen should be legible. That is, it should be read without effort. Sometimes legibility is simply a matter of type size; more often, however, it is a matter of typeface design. Case selection always influences legibility. In general, typefaces that are true to

3696-425: The eye, requiring special effort for separation and understanding. Currently , legibility research tends to be limited to critical issues or the testing of specific design solutions (for example, when new typefaces are developed). Examples of critical issues include typefaces for people with visual impairment , typefaces and case selection for highway and street signs, or for other conditions where legibility may make

3773-423: The first beamline , called ARAMIS, was put into operation. The second beamline, ATHOS, is expected to follow by fall 2020. ARAMIS delivers very high-energy short-wave X-ray light, which can be used to follow how atoms behave during a fast-moving process. ATHOS delivers softer X-ray light with lower energy, making it possible to observe atoms and molecules as they form a new chemical bond. The total construction cost

3850-501: The first punches and dies used to make seals and currency in ancient times , which ties the concept to printing. The uneven spacing of the impressions on brick stamps found in the Mesopotamian cities of Uruk and Larsa , dating from the second millennium B.C. , may be evidence of type, wherein the reuse of identical characters was applied to create cuneiform text. Babylonian cylinder seals were used to create an impression on

3927-486: The graphic design. Spacing and kerning, size-specific spacing, x-height and vertical proportions, character variation, width, weight, and contrast, are several techniques that are necessary to be taken into consideration when thinking about the appropriateness of specific typefaces or creating them. When placing two or more differing and/or contrasting fonts together, these techniques come into play for organizational strategies and demanding attractive qualities. For example, if

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4004-675: The letters, numbers, and symbols created by the process. Type design is a closely related craft, sometimes considered part of typography; most typographers do not design typefaces, and some type designers do not consider themselves typographers. Typography also may be used as an ornamental and decorative device, unrelated to the communication of information. Typography is also the work of graphic designers , art directors , manga artists , comic book artists , and, now, anyone who arranges words, letters, numbers, and symbols for publication, display, or distribution, from clerical workers and newsletter writers to anyone self-publishing materials. Until

4081-458: The model for Aldine typefaces), and Claude Garamond . With their more specialized requirements, newspapers and magazines rely on compact, tightly fitted styles of text typefaces with serifs specially designed for the task, which offer maximum flexibility, readability, legibility, and efficient use of page space. Sans serif text typefaces (without serifs) often are used for introductory paragraphs, incidental text, and whole short articles. A fashion at

4158-502: The more commonly used Gothic (blackletter). Roman typeface also was based on hand-lettering styles. The development of Roman typeface can be traced back to Greek lapidary letters. Greek lapidary letters were carved into stone and "one of the first formal uses of Western letterforms "; after that, Roman lapidary letterforms evolved into the monumental capitals, which laid the foundation for Western typographical design, especially serif typefaces. There are two styles of Roman typefaces:

4235-408: The nanometre ( 10 m) or picometre ( 10 m). In 1868, Swedish physicist Anders Jonas Ångström created a chart of the spectrum of sunlight , in which he expressed the wavelengths of electromagnetic radiation in the electromagnetic spectrum in multiples of one ten-millionth of a millimetre (or 10  mm .) Ångström's chart and table of wavelengths in the solar spectrum became widely used in

4312-574: The new metre. Within ten years, the unit had been deemed both insufficiently accurate (with accuracies closer to 15 parts per million) and obsolete due to higher precision measuring equipment. Although still widely used in physics and chemistry, the angstrom is not officially a part of the International System of Units (SI). Up to 2019, it was listed as a compatible unit by both the International Bureau of Weights and Measures (BIPM) and

4389-411: The old style, and the modern. The former is characterized by its similarly weighted lines, while the latter is distinguished by its contrast of light and heavy lines. Often, these styles are combined. In relation to the international graphics of the 1920s - 1930s, the term "International Typographic Style" is used. In the 1950s - 1960s, such a phenomenon as "Swiss style" was formed in typography. By

4466-576: The origin of which was during Hellenistic and Roman bookmaking, reached its zenith in the illuminated manuscripts of the Middle Ages. Metal typefaces notably altered the style, making it "crisp and uncompromising", and also brought about "new standards of composition". During the Renaissance period in France, Claude Garamond was partially responsible for the adoption of Roman typeface that eventually supplanted

4543-573: The page in combination with other graphic elements impart a "feel" or "resonance" to the subject matter. With printed media, typographers also are concerned with binding margins, paper selection, and printing methods when determining the correct color of the page. Three fundamental aspects of typography are legibility , readability , and aesthetics . Although in a non-technical sense "legible" and "readable" are often used synonymously, typographically they are separate but related concepts. Legibility and readability tend to support aesthetic aspects of

4620-430: The practical typefaces of traditional typography. Designs for typefaces could be created faster with the new technology, and for more specific functions. The cost for developing typefaces was drastically lowered, becoming widely available to the masses. The change has been called the "democratization of type" and has given new designers more opportunities to enter the field. The design of typefaces has developed alongside

4697-501: The publication, and in some cases for dramatic effect. By formulating a style guide , a publication or periodical standardizes with a relatively small collection of typefaces, each used for specific elements within the publication, and makes consistent use of typefaces, case, type sizes, italic, boldface, colors, and other typographic features such as combining large and small capital letters together. Some publications, such as The Guardian and The Economist , go so far as to commission

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4774-490: The same period Letraset introduced dry transfer technology that allowed designers to transfer types instantly. The famous Lorem Ipsum gained popularity due to its usage in Letraset . During the mid-1980s personal computers allowed type designers to create typefaces digitally using commercial graphic design software such as Fontographer . Digital technology also enabled designers to create more experimental typefaces as well as

4851-497: The structure of vital proteins and their reactions to substances, in order to develop new drugs. Angstrom The angstrom ( / ˈ æ ŋ s t r əm / ; ANG -strəm ) is a unit of length equal to 10 m ; that is, one ten- billionth of a metre , a hundred-millionth of a centimetre , 0.1 nanometre , or 100 picometres . The unit is named after the Swedish physicist Anders Jonas Ångström (1814–1874). It

4928-666: The text from conveying its message to readers. A study from 2020 found that the participating subjects felt music sounded "more pleasant" when the CD cover featured round typeface. Type may be combined with negative space and images, forming relationships and dialog between the words and images for special effects. Display designs are a potent element in graphic design . Some sign designers exhibit less concern for readability, sacrificing it for an artistic manner. Color and size of type elements may be much more prevalent than in solely text designs. Most display items exploit type at larger sizes, where

5005-423: The text, understanding its context, and understanding what the text is wishing to convey. Once the typographer has an understanding of the text, then they have the responsibility of using the appropriate typeface to honor the writing done by the author of the text. Knowledge required to choose the correct typeface comes with understanding the historical background of typefaces and understanding the reason that typeface

5082-589: The text. Although typography can potentially attract the reader's attention and create a beautiful/attractive piece of text, the craft of typography is not limited to the aesthetic appeal of the text. On the contrary, the object of typography is to make the reading experience practical and useful. Bold colors, multiple typefaces, and colorful backgrounds in a typographic design may be eye-catching; however, it may not be appropriate for all bodies of text and could potentially make text illegible. Overuse of design elements such as colors and typefaces can be unsettling, preventing

5159-407: The title to convey its importance, which directly informs the reader of the structure in which the text is intended to be read, and increases readability from varying distances. Typography utilized to make reading practical: Typography not only must honor the tone of the text but also share the responsibility of making the audience commence reading and sustaining the audience's attention throughout

5236-423: The twentieth century, computers turned typeface design into a rather simplified process. This has allowed the number of typefaces and styles to proliferate exponentially, as there now are thousands available. Confusion between typeface and font (the various styles of a single typeface) occurred in 1984 when Steve Jobs mislabeled typefaces as fonts for Apple computers and his error has been perpetuated throughout

5313-591: The uncorrected ones. In 1892–1895, Albert A. Michelson and Jean-René Benoît , working at the BIPM with specially developed equipment, determined that the length of the international metre standard was equal to 1 553 163.5 times the wavelength of the red line of the emission spectrum of electrically excited cadmium vapor. In 1907, the International Union for Cooperation in Solar Research (which later became

5390-631: The vast quantities required to print multiple copies of texts. This technical breakthrough was instrumental in starting the Printing Revolution and the first book printed with lead-based movable type was the Gutenberg Bible . Rapidly advancing technology revolutionized typography in the latter twentieth century. During the 1960s some camera-ready typesetting could be produced in any office or workshop with stand-alone machines such as those introduced by IBM (see: IBM Selectric typewriter ). During

5467-521: The words are formed by assembling single letter tiles in the desired order, which were reasonably widespread in medieval Northern Europe. Typography with movable type was invented during the eleventh-century Song dynasty in China by Bi Sheng (990–1051). His movable type system was manufactured from ceramic materials, and clay type printing continued to be practiced in China until the Qing dynasty . Wang Zhen

5544-448: The Å glyph was unavailable, the unit was sometimes written as "A.U.". An example is Bragg 's 1921 classical paper on the structure of ice, which gives the c- and a-axis lattice constants as 4.52 A.U. and 7.34 A.U., respectively. Ambiguously, the abbreviation " a.u. " may also refer to the atomic unit of length, the bohr —about 0.53 Å—or the much larger astronomical unit (about 1.5 × 10  m ). Typography This

5621-452: Was created. For example, if the text is titled "Commercial Real Estate Transactions" and elaborates on the real estate market throughout the body, then the appropriate typeface is a serif typeface, because the author intends to inform his audience on a serious topic and not entertain his audience with an anecdote; a serif typeface would convey a sense of seriousness to the audience instantaneously. The typographer would also employ larger type for

5698-465: Was limited and the technology did not spread beyond East and Central Asia, however. Modern lead-based movable type, along with the mechanical printing press , is most often attributed to the goldsmith Johannes Gutenberg in 1439. His type pieces, made from a lead -based alloy , suited printing purposes so well that the alloy is still used today. Gutenberg developed specialized techniques for casting and combining cheap copies of letter punches in

5775-594: Was met by medieval print artifacts such as the Latin Pruefening Abbey inscription of 1119 that was created by the same technique as the Phaistos Disc. The silver altarpiece of patriarch Pellegrinus II (1195–1204) in the cathedral of Cividale was printed with individual letter punches. Apparently, the same printing technique may be found in tenth to twelfth century Byzantine reliquaries . Other early examples include individual letter tiles where

5852-549: Was one of the pioneers of wooden movable type . Although the wooden type was more durable under the mechanical rigors of handling, repeated printing wore the character faces down and the types could be replaced only by carving new pieces. Metal movable type was first invented in Korea during the Goryeo Dynasty , approximately 1230. Hua Sui introduced bronze type printing to China in 1490 AD. The diffusion of both movable-type systems

5929-561: Was originally spelled with Swedish letters , as Ångström and later as ångström ( / ˈ ɒ ŋ s t r əm / ). The latter spelling is still listed in some dictionaries, but is now rare in English texts. Some popular US dictionaries list only the spelling angstrom . The unit's symbol is Å , which is a letter of the Swedish alphabet , regardless of how the unit is spelled. However, "A" or "A.U." may be used in less formal contexts or typographically limited media. The angstrom

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