An archive is an accumulation of historical records or the physical place they are located. Archives contain primary source documents that have accumulated over the course of an individual or organization's lifetime, are kept to show the function of that person or organization. Professional archivists and historians understand archives to be records that have been and generated as a product of regular legal, administrative, or social activities, they have been metaphorically defined as "the secretions of an organism", are distinguished from documents that have been consciously written or created to communicate a particular message to posterity. In general, archives consist of records that have been selected for permanent or long-term preservation on grounds of their enduring cultural, historical, or evidentiary value. Archival records are unpublished and always unique, unlike books or magazines for which many identical copies exist; this means that archives are quite distinct from libraries with regard to their functions and organization, although archival collections can be found within library buildings.
A person who works in archives is called an archivist. The study and practice of organizing and providing access to information and materials in archives is called archival science; the physical place of storage can be referred to an archives, or a repository. When referring to historical records or the places they are kept, the plural form archives is chiefly used; the computing use of the term'archive' should not be confused with the record-keeping meaning of the term. First attested in English in early 17th century, the word archive is derived from the French archives, in turn from Latin archīum or archīvum, the romanized form of the Greek ἀρχεῖον, "public records, town-hall, residence, or office of chief magistrates", itself from ἀρχή, amongst others "magistracy, government", which comes from the verb ἄρχω, "to begin, govern"; the word developed from the Greek ἀρχεῖον, which refers to the home or dwelling of the Archon, in which important official state documents were filed and interpreted under the authority of the Archon.
The adjective formed from archive is archival. The practice of keeping official documents is old. Archaeologists have discovered archives of hundreds of clay tablets going back to the third and second millennia BC in sites like Ebla, Amarna, Hattusas and Pylos; these discoveries have been fundamental to know ancient alphabets, languages and politics. Archives were well developed by the ancient Chinese, the ancient Greeks, ancient Romans. However, they have been lost, since documents written on materials like papyrus and paper deteriorated at a faster pace, unlike their stone tablet counterparts. Archives of churches and cities from the Middle Ages survive and have kept their official status uninterruptedly until now, they are the basic tool for historical research on these ages. England after 1066 developed archival research methods; the Swiss developed archival systems after 1450. Modern archival thinking has many roots from the French Revolution; the French National Archives, who possess the largest archival collection in the world, with records going as far back as 625 A.
D. were created in 1790 during the French Revolution from various government and private archives seized by the revolutionaries. Historians, lawyers, demographers and others conduct research at archives; the research process at each archive is unique, depends upon the institution that houses the archive. While there are many kinds of archives, the most recent census of archivists in the United States identifies five major types: academic, government, non-profit, other. There are four main areas of inquiry involved with archives: material technologies, organizing principles, geographic locations, tangled embodiments of humans and non-humans; these areas help to further categorize. Archives in colleges and other educational facilities are housed within a library, duties may be carried out by an archivist. Academic archives exist to serve the academic community. An academic archive may contain materials such as the institution's administrative records and professional papers of former professors and presidents, memorabilia related to school organizations and activities, items the academic library wishes to remain in a closed-stack setting, such as rare books or thesis copies.
Access to the collections in these archives is by prior appointment only. Users of academic archives can be undergraduates, graduate students and staff, scholarly researchers, the general public. Many academic archives work with alumni relations departments or other campus institutions to help raise funds for their library or school. Qualifications for employment may vary. Entry-level positions require an undergraduate diploma, but archivists hold graduate degrees in history or library science. Subject-area specialization becomes more common in higher ranking positions. Archives located in for-profit institutions are those owned by a private business. Examples of prominent business archives in the United States include Coca-Cola (which owns the
Project Gutenberg is a volunteer effort to digitize and archive cultural works, to "encourage the creation and distribution of eBooks". It is the oldest digital library. Most of the items in its collection are the full texts of public domain books; the project tries to make these as free as possible, in long-lasting, open formats that can be used on any computer. As of 23 June 2018, Project Gutenberg reached 57,000 items in its collection of free eBooks; the releases are available in plain text but, wherever possible, other formats are included, such as HTML, PDF, EPUB, MOBI, Plucker. Most releases are in the English language, but many non-English works are available. There are multiple affiliated projects that are providing additional content, including regional and language-specific works. Project Gutenberg is closely affiliated with Distributed Proofreaders, an Internet-based community for proofreading scanned texts. Project Gutenberg was started by Michael Hart in 1971 with the digitization of the United States Declaration of Independence.
Hart, a student at the University of Illinois, obtained access to a Xerox Sigma V mainframe computer in the university's Materials Research Lab. Through friendly operators, he received an account with a unlimited amount of computer time. Hart has said he wanted to "give back" this gift by doing something that could be considered to be of great value, his initial goal was to make the 10,000 most consulted books available to the public at little or no charge, to do so by the end of the 20th century. This particular computer was one of the 15 nodes on ARPANET, the computer network that would become the Internet. Hart believed that computers would one day be accessible to the general public and decided to make works of literature available in electronic form for free, he used a copy of the United States Declaration of Independence in his backpack, this became the first Project Gutenberg e-text. He named the project after Johannes Gutenberg, the fifteenth century German printer who propelled the movable type printing press revolution.
By the mid-1990s, Hart was running Project Gutenberg from Illinois Benedictine College. More volunteers had joined the effort. All of the text was entered manually until 1989 when image scanners and optical character recognition software improved and became more available, which made book scanning more feasible. Hart came to an arrangement with Carnegie Mellon University, which agreed to administer Project Gutenberg's finances; as the volume of e-texts increased, volunteers began to take over the project's day-to-day operations that Hart had run. Starting in 2004, an improved online catalog made Project Gutenberg content easier to browse and hyperlink. Project Gutenberg is now hosted by ibiblio at the University of North Carolina at Chapel Hill. Italian volunteer Pietro Di Miceli developed and administered the first Project Gutenberg website and started the development of the Project online Catalog. In his ten years in this role, the Project web pages won a number of awards being featured in "best of the Web" listings, contributing to the project's popularity.
Hart died on 6 September 2011 at his home in Urbana, Illinois at the age of 64. In 2000, a non-profit corporation, the Project Gutenberg Literary Archive Foundation, Inc. was chartered in Mississippi, United States to handle the project's legal needs. Donations to it are tax-deductible. Long-time Project Gutenberg volunteer Gregory Newby became the foundation's first CEO. In 2000, Charles Franks founded Distributed Proofreaders, which allowed the proofreading of scanned texts to be distributed among many volunteers over the Internet; this effort increased the number and variety of texts being added to Project Gutenberg, as well as making it easier for new volunteers to start contributing. DP became affiliated with Project Gutenberg in 2002; as of 2018, the 36,000+ DP-contributed books comprised two-thirds of the nearly 57,000 books in Project Gutenberg. In August 2003, Project Gutenberg created a CD containing 600 of the "best" e-books from the collection; the CD is available for download as an ISO image.
When users are unable to download the CD, they can request to have a copy sent to them, free of charge. In December 2003, a DVD was created containing nearly 10,000 items. At the time, this represented the entire collection. In early 2004, the DVD became available by mail. In July 2007, a new edition of the DVD was released containing over 17,000 books, in April 2010, a dual-layer DVD was released, containing nearly 30,000 items; the majority of the DVDs, all of the CDs mailed by the project, were recorded on recordable media by volunteers. However, the new dual layer DVDs were manufactured, as it proved more economical than having volunteers burn them; as of October 2010, the project has mailed 40,000 discs. As of 2017, the delivery of free CDs has been discontinued, though the ISO image is still available for download; as of August 2015, Project Gutenberg claimed over 57,000 items in its collection, with an average of over 50 new e-books being added each week. These are works of literature from the Western cultural tradition.
In addition to literature such as novels, short stories and drama, Project Gutenberg has cookbooks, reference works and issues of periodicals. The Project Gutenberg collection has a few non-text items such as audio files and music-notation files. Most releases are in English, but there are significant numbers in many other languages; as of April 2016, the non-English languages most represented are: Fren
An image scanner—often abbreviated to just scanner, although the term is ambiguous out of context —is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image. Used in offices are variations of the desktop flatbed scanner where the document is placed on a glass window for scanning. Hand-held scanners, where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering and measurement, orthotics and other applications. Mechanically driven scanners that move the document are used for large-format documents, where a flatbed design would be impractical. Modern scanners use a charge-coupled device or a contact image sensor as the image sensor, whereas drum scanners, developed earlier and still used for the highest possible image quality, use a photomultiplier tube as the image sensor. A rotary scanner, used for high-speed document scanning, is a type of drum scanner that uses a CCD array instead of a photomultiplier.
Non-contact planetary scanners photograph delicate books and documents. All these scanners produce two-dimensional images of subjects that are flat, but sometimes solid. Digital cameras can be used for the same purposes as dedicated scanners; when compared to a true scanner, a camera image is subject to a degree of distortion, shadows, low contrast, blur due to camera shake. Resolution is sufficient for less demanding applications. Digital cameras offer advantages of speed and non-contact digitizing of thick documents without damaging the book spine; as of 2010 scanning technologies were combining 3D scanners with digital cameras to create full-color, photo-realistic 3D models of objects. In the biomedical research area, detection devices for DNA microarrays are called scanners as well; these scanners are high-resolution systems. The detection is done via a photomultiplier tube. Modern scanners are considered the successors of early fax input devices; the pantelegraph was an early form of facsimile machine transmitting over normal telegraph lines developed by Giovanni Caselli, used commercially in the 1860s, the first such device to enter practical service.
It used electromagnets to drive and synchronize movement of pendulums at the source and the distant location, to scan and reproduce images. It could transmit handwriting, signatures, or drawings within an area of up to 150 × 100 mm. Édouard Belin's Belinograph of 1913, scanned using a photocell and transmitted over ordinary phone lines, formed the basis for the AT&T Wirephoto service. In Europe, services similar to a wirephoto were called a Belino, it was used by news agencies from the 1920s to the mid-1990s, consisted of a rotating drum with a single photodetector at a standard speed of 60 or 120 rpm. They send a linear analog AM signal through standard telephone voice lines to receptors, which synchronously print the proportional intensity on special paper. Color photos were sent as three separated RGB filtered images consecutively, but only for special events due to transmission costs. Drum scanners capture image information with photomultiplier tubes, rather than the charge-coupled device arrays found in flatbed scanners and inexpensive film scanners.
"Reflective and transmissive originals are mounted on an acrylic cylinder, the scanner drum, which rotates at high speed while it passes the object being scanned in front of precision optics that deliver image information to the PMTs. Modern color drum scanners use three matched PMTs, which read red and green light, respectively. Light from the original artwork is split into separate red and green beams in the optical bench of the scanner with dichroic filters." Photomultipliers offer superior dynamic range and for this reason drum scanners can extract more detail from dark shadow areas of a transparency than flatbed scanners using CCD sensors. The smaller dynamic range of the CCD sensors, versus photomultiplier tubes, can lead to loss of shadow detail when scanning dense transparency film. While mechanics vary by manufacturer, most drum scanners pass light from halogen lamps though a focusing system to illuminate both reflective and transmissive originals; the drum scanner gets its name from the clear acrylic cylinder, the drum, on which the original artwork is mounted for scanning.
Depending on size, it is possible to mount originals up to 20 by 28 inches, but maximum size varies by manufacturer. "One of the unique features of drum scanners is the ability to control sample area and aperture size independently. The sample size is the area; the aperture is the actual opening. The ability to control aperture and sample size separately is useful for smoothing film grain when scanning black-and-white and color negative originals."While drum scanners are capable of scanning both reflective and transmissive artwork, a good-quality flatbed scanner can produce good scans from reflective artwork. As a result, drum scanners are used to scan prints now that high-quality, inexpensive flatbed scanners are available. Film, however, is; because film can be wet-mounted to the scanner drum, which enhances sharpness and masks dust and scratches, because
A museum is an institution that cares for a collection of artifacts and other objects of artistic, historical, or scientific importance. Many public museums make these items available for public viewing through exhibits that may be permanent or temporary; the largest museums are located in major cities throughout the world, while thousands of local museums exist in smaller cities and rural areas. Museums have varying aims, ranging from serving researchers and specialists to serving the general public; the goal of serving researchers is shifting to serving the general public. There are many types of museums, including art museums, natural history museums, science museums, war museums, children's museums. Amongst the world's largest and most visited museums are the Louvre in Paris, the National Museum of China in Beijing, the Smithsonian Institution in Washington, D. C. the British Museum and National Gallery in London, the Metropolitan Museum of Art in New York City and Vatican Museums in Vatican City.
According to The World Museum Community, there are more than 55,000 museums in 202 countries. The English "museum" comes from the Latin word, is pluralized as "museums", it is from the Ancient Greek Μουσεῖον, which denotes a place or temple dedicated to the Muses, hence a building set apart for study and the arts the Musaeum for philosophy and research at Alexandria by Ptolemy I Soter about 280 BC. The purpose of modern museums is to collect, preserve and display items of artistic, cultural, or scientific significance for the education of the public. From a visitor or community perspective, the purpose can depend on one's point of view. A trip to a local history museum or large city art museum can be an entertaining and enlightening way to spend the day. To city leaders, a healthy museum community can be seen as a gauge of the economic health of a city, a way to increase the sophistication of its inhabitants. To a museum professional, a museum might be seen as a way to educate the public about the museum's mission, such as civil rights or environmentalism.
Museums are, above all, storehouses of knowledge. In 1829, James Smithson's bequest, that would fund the Smithsonian Institution, stated he wanted to establish an institution "for the increase and diffusion of knowledge."Museums of natural history in the late 19th century exemplified the Victorian desire for consumption and for order. Gathering all examples of each classification of a field of knowledge for research and for display was the purpose; as American colleges grew in the 19th century, they developed their own natural history collections for the use of their students. By the last quarter of the 19th century, the scientific research in the universities was shifting toward biological research on a cellular level, cutting edge research moved from museums to university laboratories. While many large museums, such as the Smithsonian Institution, are still respected as research centers, research is no longer a main purpose of most museums. While there is an ongoing debate about the purposes of interpretation of a museum's collection, there has been a consistent mission to protect and preserve artifacts for future generations.
Much care and expense is invested in preservation efforts to retard decomposition in aging documents, artifacts and buildings. All museums display objects; as historian Steven Conn writes, "To see the thing itself, with one's own eyes and in a public place, surrounded by other people having some version of the same experience can be enchanting."Museum purposes vary from institution to institution. Some favor education over conservation, or vice versa. For example, in the 1970s, the Canada Science and Technology Museum favored education over preservation of their objects, they displayed objects as well as their functions. One exhibit featured a historic printing press that a staff member used for visitors to create museum memorabilia; some seek to reach a wide audience, such as a national or state museum, while some museums have specific audiences, like the LDS Church History Museum or local history organizations. Speaking, museums collect objects of significance that comply with their mission statement for conservation and display.
Although most museums do not allow physical contact with the associated artifacts, there are some that are interactive and encourage a more hands-on approach. In 2009, Hampton Court Palace, palace of Henry VIII, opened the council room to the general public to create an interactive environment for visitors. Rather than allowing visitors to handle 500-year-old objects, the museum created replicas, as well as replica costumes; the daily activities, historic clothing, temperature changes immerse the visitor in a slice of what Tudor life may have been. This section lists the 20 most visited museums in 2015 as compiled by AECOM and the Themed Entertainment Association's annual report on the world's most visited attractions. For 2016 figures see List of most visited museums; the cities of London and Washington, D. C. contain more of the 20 most visited museums in the world than any others, with six museums and four museums, respectively. Early museums began as the private collections of wealthy individuals, families or institutions of art and rare or curious natural objects and artifacts.
These were displayed in so-called wonder rooms or cabinets of curiosities. One of the oldest museums known is Ennigaldi-Nanna's museum, built by Princess Ennigaldi at the end of the Neo-Babylonian Empire; the site dates from c. 530 BCE, contained artifacts from earlier M
A digital camera or digicam is a camera that captures photographs in digital memory. Most cameras produced today are digital, while there are still dedicated digital cameras, many more cameras are now being incorporated into mobile devices, portable touchscreen computers, which can, among many other purposes, use their cameras to initiate live videotelephony and directly edit and upload imagery to others. However, high-end, high-definition dedicated cameras are still used by professionals. Digital and movie cameras share an optical system using a lens with a variable diaphragm to focus light onto an image pickup device; the diaphragm and shutter admit the correct amount of light to the imager, just as with film but the image pickup device is electronic rather than chemical. However, unlike film cameras, digital cameras can display images on a screen after being recorded, store and delete images from memory. Many digital cameras can record moving videos with sound; some digital cameras can perform other elementary image editing.
The history of the digital camera began with Eugene F. Lally of the Jet Propulsion Laboratory, thinking about how to use a mosaic photosensor to capture digital images, his 1961 idea was to take pictures of the planets and stars while travelling through space to give information about the astronauts' position. As with Texas Instruments employee Willis Adcock's filmless camera in 1972, the technology had yet to catch up with the concept; the Cromemco Cyclops was an all-digital camera introduced as a commercial product in 1975. Its design was published as a hobbyist construction project in the February 1975 issue of Popular Electronics magazine, it used a 32×32 Metal Oxide Semiconductor sensor. Steven Sasson, an engineer at Eastman Kodak and built the first self-contained electronic camera that used a charge-coupled device image sensor in 1975. Early uses were military and scientific. In 1986, Japanese company Nikon introduced the first digital single-lens reflex camera, the Nikon SVC. In the mid-to-late 1990s, DSLR cameras became common among consumers.
By the mid-2000s, DSLR cameras had replaced film cameras. In 2000, Sharp introduced the J-SH04 J-Phone, in Japan. By the mid-2000s, higher-end cell phones had an integrated digital camera. By the beginning of the 2010s all smartphones had an integrated digital camera; the two major types of digital image sensor are CCD and CMOS. A CCD sensor has one amplifier for all the pixels, while each pixel in a CMOS active-pixel sensor has its own amplifier. Compared to CCDs, CMOS sensors use less power. Cameras with a small sensor use a back-side-illuminated CMOS sensor. Overall final image quality is more dependent on the image processing capability of the camera, than on sensor type; the resolution of a digital camera is limited by the image sensor that turns light into discrete signals. The brighter the image at a given point on the sensor, the larger the value, read for that pixel. Depending on the physical structure of the sensor, a color filter array may be used, which requires demosaicing to recreate a full-color image.
The number of pixels in the sensor determines the camera's "pixel count". In a typical sensor, the pixel count is the product of the number of columns. For example, a 1,000 by 1,000 pixel sensor would have 1 megapixel. Final quality of an image depends on all optical transformations in the chain of producing the image. Carl Zeiss points out. In case of a digital camera, a simplistic way of expressing it is that the lens determines the maximum sharpness of the image while the image sensor determines the maximum resolution; the illustration on the right can be said to compare a lens with poor sharpness on a camera with high resolution, to a lens with good sharpness on a camera with lower resolution. Since the first digital backs were introduced, there have been three main methods of capturing the image, each based on the hardware configuration of the sensor and color filters. Single-shot capture systems use either one sensor chip with a Bayer filter mosaic, or three separate image sensors which are exposed to the same image via a beam splitter.
Multi-shot exposes the sensor to the image in a sequence of three or more openings of the lens aperture. There are several methods of application of the multi-shot technique; the most common was to use a single image sensor with three filters passed in front of the sensor in sequence to obtain the additive color information. Another multiple shot method is called Microscanning; this method uses a single sensor chip with a Bayer filter and physically moved the sensor on the focus plane of the lens to construct a higher resolution image than the native resolution of the chip. A third version combined the two methods without a Bayer filter on the chip; the third method is called scanning because the sensor moves across the focal plane much like the sensor of an image scanner. The linear or tri-linear sensors in scanning cameras utilize only a single line of photosensors, or three lines for the three colors. Scanning may be accomplished by rotating the whole camera. A digital rotating line camera offers images of high total resolution.
The choice of method for a given capture is determined by the subject matter. It is inappropriate to attempt to capture a subject that moves with anything but a single-shot sys
A photograph is an image created by light falling on a photosensitive surface photographic film or an electronic image sensor, such as a CCD or a CMOS chip. Most photographs are created using a camera, which uses a lens to focus the scene's visible wavelengths of light into a reproduction of what the human eye would see; the process and practice of creating such images is called photography. The word photograph was coined in 1839 by Sir John Herschel and is based on the Greek φῶς, meaning "light," and γραφή, meaning "drawing, writing," together meaning "drawing with light." The first permanent photograph, a contact-exposed copy of an engraving, was made in 1822 using the bitumen-based "heliography" process developed by Nicéphore Niépce. The first photographs of a real-world scene, made using a camera obscura, followed a few years but Niépce's process was not sensitive enough to be practical for that application: a camera exposure lasting for hours or days was required. In 1829 Niépce entered into a partnership with Louis Daguerre and the two collaborated to work out a similar but more sensitive and otherwise improved process.
After Niépce's death in 1833 Daguerre concentrated on silver halide-based alternatives. He exposed a silver-plated copper sheet to iodine vapor, creating a layer of light-sensitive silver iodide, he named this first practical process for making photographs with a camera the daguerreotype, after himself. Its existence was announced to the world on 7 January 1839 but working details were not made public until 19 August. Other inventors soon made improvements which reduced the required exposure time from a few minutes to a few seconds, making portrait photography practical and popular; the daguerreotype had shortcomings, notably the fragility of the mirror-like image surface and the particular viewing conditions required to see the image properly. Each was a unique opaque positive. Inventors set about working out improved processes. By the end of the 1850s the daguerreotype had been replaced by the less expensive and more viewed ambrotype and tintype, which made use of the introduced collodion process.
Glass plate collodion negatives used to make prints on albumen paper soon became the preferred photographic method and held that position for many years after the introduction of the more convenient gelatin process in 1871. Refinements of the gelatin process have remained the primary black-and-white photographic process to this day, differing in the sensitivity of the emulsion and the support material used, glass a variety of flexible plastic films, along with various types of paper for the final prints. Color photography is as old as black-and-white, with early experiments including John Herschel's Anthotype prints in 1842, the pioneering work of Louis Ducos du Hauron in the 1860s, the Lippmann process unveiled in 1891, but for many years color photography remained little more than a laboratory curiosity, it first became a widespread commercial reality with the introduction of Autochrome plates in 1907, but the plates were expensive and not suitable for casual snapshot-taking with hand-held cameras.
The mid-1930s saw the introduction of Kodachrome and Agfacolor Neu, the first easy-to-use color films of the modern multi-layer chromogenic type. These early processes produced transparencies for use in slide projectors and viewing devices, but color prints became popular after the introduction of chromogenic color print paper in the 1940s; the needs of the motion picture industry generated a number of special processes and systems the best-known being the now-obsolete three-strip Technicolor process. Non-digital photographs are produced with a two-step chemical process. In the two-step process the light-sensitive film captures a negative image. To produce a positive image, the negative is most transferred onto photographic paper. Printing the negative onto transparent film stock is used to manufacture motion picture films. Alternatively, the film is processed to invert the negative image; such positive images are mounted in frames, called slides. Before recent advances in digital photography, transparencies were used by professionals because of their sharpness and accuracy of color rendition.
Most photographs published in magazines were taken on color transparency film. All photographs were monochromatic or hand-painted in color. Although methods for developing color photos were available as early as 1861, they did not become available until the 1940s or 1950s, so, until the 1960s most photographs were taken in black and white. Since color photography has dominated popular photography, although black and white is still used, being easier to develop than color. Panoramic format images can be taken with cameras like the Hasselblad Xpan on standard film. Since the 1990s, panoramic photos have been available on the Advanced Photo System film. APS was developed by several of the major film manufacturers to provide a film with different formats and computerized options available, though APS panoramas were created using a mask in panorama-capable cameras, far less desirable than a true panoramic camera, which achieves its effect through a wider film format. APS has been discontinued; the advent of the microcomputer and d
As a physical object, a book is a stack of rectangular pages oriented with one edge tied, sewn, or otherwise fixed together and bound to the flexible spine of a protective cover of heavier inflexible material. The technical term for this physical arrangement is codex. In the history of hand-held physical supports for extended written compositions or records, the codex replaces its immediate predecessor, the scroll. A single sheet in a codex is a leaf, each side of a leaf is a page; as an intellectual object, a book is prototypically a composition of such great length that it takes a considerable investment of time to compose and a still considerable, though not so extensive, investment of time to read. This sense of book has an unrestricted sense. In the restricted sense, a book is a self-sufficient section or part of a longer composition, a usage that reflects the fact that, in antiquity, long works had to be written on several scrolls, each scroll had to be identified by the book it contained.
So, for instance, each part of Aristotle's Physics is called a book, as of course the Bible encompasses many different books. In the unrestricted sense, a book is the compositional whole of which such sections, whether called books or chapters or parts, are parts; the intellectual content in a physical book need not be a composition, nor be called a book. Books can consist only of drawings, engravings, or photographs, or such things as crossword puzzles or cut-out dolls. In a physical book the pages can be left blank or can feature an abstract set of lines as support for on-going entries, i.e. an account book, an appointment book, a log book, an autograph book, a notebook, a diary or day book, or a sketch book. Some physical books are made with pages thick and sturdy enough to support other physical objects, like a scrapbook or photograph album. Books may be distributed in electronic form as other formats. Although in ordinary academic parlance a monograph is understood to be a specialist academic work, rather than a reference work on a single scholarly subject, in library and information science monograph denotes more broadly any non-serial publication complete in one volume or a finite number of volumes, in contrast to serial publications like a magazine, journal, or newspaper.
An avid reader or collector of books or a book lover is a bibliophile or colloquially, "bookworm". A shop where books are bought and sold is a bookstore. Books are sold elsewhere. Books can be borrowed from libraries. Google has estimated that as of 2010 130,000,000 distinct titles had been published. In some wealthier nations, the sale of printed books has decreased because of the use of e-books, though sales of e-books declined in the first half of 2015; the word book comes from Old English "bōc", which in turn comes from the Germanic root "*bōk-", cognate to "beech". In Slavic languages "буква" is cognate with "beech". In Russian and in Serbian and Macedonian, the word "букварь" or "буквар" refers to a primary school textbook that helps young children master the techniques of reading and writing, it is thus conjectured. The Latin word codex, meaning a book in the modern sense meant "block of wood"; when writing systems were created in ancient civilizations, a variety of objects, such as stone, tree bark, metal sheets, bones, were used for writing.
A tablet is a physically robust writing medium, suitable for casual transport and writing. Clay tablets were flattened and dry pieces of clay that could be carried, impressed with a stylus, they were used as a writing medium for writing in cuneiform, throughout the Bronze Age and well into the Iron Age. Wax tablets were pieces of wood covered in a thick enough coating of wax to record the impressions of a stylus, they were the normal writing material in schools, in accounting, for taking notes. They had the advantage of being reusable: the wax could be melted, reformed into a blank; the custom of binding several wax tablets together is a possible precursor of modern bound books. The etymology of the word codex suggests that it may have developed from wooden wax tablets. Scrolls can be made from papyrus, a thick paper-like material made by weaving the stems of the papyrus plant pounding the woven sheet with a hammer-like tool until it is flattened. Papyrus was used for writing in Ancient Egypt as early as the First Dynasty, although the first evidence is from the account books of King Nefertiti Kakai of the Fifth Dynasty.
Papyrus sheets were glued together to form a scroll. Tree bark such as lime and other materials were used. According to Herodotus, the Phoenicians brought writing and papyrus to Greece around the 10th or 9th century BC; the Greek word for papyrus as writing material and book come from the Phoenician port town Byblos, through which papyrus was exported to Greece. From Greek we derive the word tome, which meant a slice or piece and from there began to denote "a roll of papyrus". Tomus was used by the Latins with the same meaning as volumen. Whether made from papyrus, parchment, or paper, scrolls were the dominant form of book in the Hellenistic, Chinese and Macedonian culture