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Octavo metrics compared to the folio and quarto. Octavo, a Latin word meaning "in eighth" or "for the eighth time", [1] (abbreviated 8vo, 8º, or In-8) is a technical term describing the format of a book, which refers to the size of leaves produced from folding a full sheet of paper on which multiple pages of text were printed to form the individual sections (or gatherings) of a book.
The size and proportions of a book depend on the size of the original full sheet. If a sheet 480 by 640 mm (19 by 25 in) is used to print a quarto, the resulting untrimmed pages, will be approximately half as large in each dimension: width 240 mm ( 9⁄ in) and height 320 mm ( 12⁄ in). An octavo page, oriented a quarter turn from the full ...
Specification (technical standard) A specification often refers to a set of documented requirements to be satisfied by a material, design, product, or service. [ 1] A specification is often a type of technical standard . There are different types of technical or engineering specifications (specs), and the term is used differently in different ...
An e-reader, also known as an e-book reader, is a portable electronic device that is designed primarily for the purpose of reading e-books and periodicals.E-readers have a similar form factor to a tablet; usually use electronic paper resulting in better screen readability, especially in bright sunlight; and have longer battery life when compared to a tablet.
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A foot-long sheet with the common width of Letter and (Government) Legal, i.e. 81⁄2 in × 12 in (215 mm × 305 mm), would have an aspect ratio very close to the square root of two as used by international paper sizes and would actually almost exactly match ISO RA4 (215 mm × 305 mm).
A cheat sheet (also cheatsheet) or crib sheet is a concise set of notes used for quick reference. Cheat sheets were historically used by students without an instructor or teacher's knowledge to cheat on a test or exam . [ 1 ]
In 1906, Rutherford noticed that alpha particles passing through sheets of mica were deflected by the sheets by as much as 2 degrees. Rutherford placed a radioactive source in a sealed tube ending with a narrow slits followed by a photographic plate. Half of the slit was covered by a thin layer of mica.