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Definition. Physics is the study of energy and matter in space and time and how they are related to each other. Physicists assume the existence of mass, length, time and electric current and then define (give the meaning of) all other physical quantities in terms of these basic units.
List of online encyclopedias. This is a list of well-known online encyclopedias that are accessible or formerly accessible on the Internet . The largest online encyclopedias are general reference works, though there are also many specialized ones. Some online encyclopedias are editions of a print encyclopedia, such as Encyclopædia Britannica ...
NameLanguageDescriptionStatusVarious (see list here )General interest, wikiActiveCombined with GNUpediaDefunctGeneral interest, the first site to ...DefunctEnglish [1]General interestRead-only (archived)People also ask
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It was formed approximately 4.5 billion years ago, is a terrestrial planet and is the second smallest of the Solar System 's planets with a diameter of 6,779 km (4,212 mi). A Martian solar day ( sol) is 24.5 hours and a Martian solar year is 1.88 Earth years (687 Earth days). Mars has two small and irregular natural satellites: Phobos and Deimos.
Aug 19, 2022 · Internet Archive. Language. English. xiv, 1408 pages : 29 cm. The editors of "Encyclopedia of Physics" whose earlier edition a decade ago won international acclaim, now provide a fully revised, expanded and updated second edition of this comprehensive reference resource.
Branches of physics. Domains of major fields of physics. Physics is a scientific discipline that seeks to construct and experimentally test theories of the physical universe. These theories vary in their scope and can be organized into several distinct branches, which are outlined in this article.
Feb 23, 2024 · Contributor. Internet Archive. Language. English. [v], 666 pages : 20 cm. This is the most popular dictionary of physics available, and contains almost 4,000 entries covering all commonly encountered physics terms and concepts. It also defines many terms from the related fields of astronomy, astrophysics, and physical chemistry.
The "Dictionary of Physics" is a major reference source in the vast and dynamic field of physics that caters for both the undergraduate and graduate student. Spanning the space between the primary literature and educational texts, it encompasses 16,000 entries and 1.8 million words in four volumes.
