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Wikipedia [c] is a free content online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and the wiki software MediaWiki.Wikipedia is the largest and most-read reference work in history, [3] [4] and is consistently ranked among the ten most visited websites; as of August 2024, it was ranked fourth by Semrush, [5] and seventh by ...
e. The Internet (or internet) [a] is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) [b] to communicate between networks and devices. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of ...
- Origin of The Letters IP
- Ipx9k and IPX9
- United States
- See Also
In the original IEC 60529 standard from year 1976, the letters IP are used without providing an explanation, and referred as "characteristic letters". In the next editions of the standard, from years 1989 and 1999 respectively, the IP is explained to denote "international protection" on both French and English pages. According to the Finnish nation...
DIN 40050-9 extended the newer IEC 60529 rating system with an IP69K rating for high-pressure, high-temperature wash-down applications.Enclosures conforming with ISO 20653:2013 must be both dust-tight (IP6X) and able to withstand high-pressure and steam cleaning. The IPx9K standard was originally developed for road vehicles—especially those that ne...
In the U.S., the National Electrical Manufacturers Association defines NEMA enclosure types in NEMA standard number 250. The following table outlines which IEC 60529 IP code each respective NEMA guideline meets. Ratings between the two standards are not directly equivalent: NEMA ratings also require additional product features and tests (such as fu...
Principal language families of the world (and in some cases geographic groups of families). For greater detail, see Distribution of languages in the world. This is a list of languages by total number of speakers.
List of largest companies by revenue. This list comprises the world's largest companies by consolidated revenue, according to the Fortune Global 500 2024 rankings and other sources. [2] American retail corporation Walmart has been the world's largest company by revenue since 2014. [1]
The three laws of motion were first stated by Isaac Newton in his Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), originally published in 1687. [3] Newton used them to investigate and explain the motion of many physical objects and systems.
The number π (/ paɪ /; spelled out as " pi ") is a mathematical constant that is the ratio of a circle 's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics.
