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Physics Wallah Limited (commonly known as Physics Wallah; or simply PW) is an Indian multinational educational technology company headquartered in Noida, Uttar Pradesh.The company was founded by Alakh Panday in 2016 as a YouTube channel aimed at teaching the physics curriculum for the Joint Entrance Examinations (JEE).
Shiyali Ramamrita Ranganathan [1] (listen ⓘ 9 August 1892 – 27 September 1972) was an Indian librarian and mathematician. [2] His most notable contributions to the field were his five laws of library science and the development of the first major faceted classification system, the colon classification.
The five laws of library science is a theory that S. R. Ranganathan proposed in 1931, detailing the principles of operating a library system. Many librarians from around the world accept the laws as the foundations of their philosophy. [1] [2] These laws, as presented in Ranganathan's The Five Laws of Library Science, are: Books are for use.
Library science (previously termed library studies and library economy) [note 1] is an interdisciplinary or multidisciplinary field that applies the practices, perspectives, and tools of management, information technology, education, and other areas to libraries; the collection, organization, preservation, and dissemination of information resources; and the political economy of information.
Colon classification (CC) is a library catalogue system developed by Shiyali Ramamrita Ranganathan. It was an early faceted (or analytico-synthetic) classification system. The first edition of colon classification was published in 1933, [1] followed by six more editions. It is especially used in libraries in India.
According to the Online Dictionary for Library and Information Science, a pathfinder is "designed to lead the user through the process of researching a specific topic, or any topic in a given field or discipline, usually in a systematic, step-by-step way, making use of the best finding tools the library has to offer.
The following outline is provided as an overview of and topical guide to library and information science: Library and information science (LIS) is the scientific study of issues related to libraries and the information fields. This includes academic studies regarding how library resources are used and how people interact with library systems.
The library houses some 150,000 volumes and 1.5 million unclassified reports on a wide variety of technical subjects pertaining to science, mathematics, and engineering. [ 1 ] There is also an associated online collection of physical science journals, and over 30 terabytes of data is stored locally. [ 1 ]