Meteorologists and weather reporters worldwide often use this unit for convenience, since working in pascals would result in much larger values.ġ5 psi = 15 × 0.0689475729 bar = 1. Millibars (symbol: mb) are also commonly used when referencing atmospheric air pressure, where atmospheric pressure equals 1013.25 mbar (101.325 kPa). The International Bureau of Weights and Measures has specified the bar as a unit that authors should have the freedom to use but has chosen not to include the bar in the list of non-SI units accepted for use with SI. The term "bar" comes from the Greek word "baros," which means weight.Ĭurrent use: Although the bar is a metric unit of pressure, it is not accepted within the International System of Units (SI) and is even deprecated within certain fields. A low pressure value in pounds force per square inch units is converted into pounds force per square foot in the following way: 1 psf 47.8803 pascals (Pa) .76 pascals (Pa) psf value x 47.8803 Pa psi value x 6894.76 Pa. History/origin: The unit, bar, was introduced by Vilhelm Bjerknes, a Norwegian meteorologist who founded modern weather forecasting. It is equal to 0.987 atmospheres (101,325 Pa), the unit often used as a reference of standard pressure. Barĭefinition: A bar (symbol: bar) is a metric unit of pressure that is defined as exactly 100,000 pascals (symbol: Pa). Although the pascal is more widely used in scientific contexts, psi is more often used in everyday contexts, particularly in countries like the United States as well as others under the US customary or imperial systems of units. As such, the prototype pound at the time was known as the avoirdupois wool pound.Ĭurrent use: The psi is fairly widely used to measure numerous pressures, such as tire pressure, scuba tank pressure, natural gas pipeline pressure, among others. The system is believed to have come into use in England around 1300 and was used in the international wool trade. It is based on the avoirdupois system, a system that uses weights in terms of the avoirdupois pound, which was standardized in 1959. History/origin: Pound-force per square inch is a unit that originated in the imperial and US customary systems of units. One psi is approximately 6,895 pascals (N/m 2). It is defined as the pressure that results when a force of one pound-force is applied to a one-square-inch area. Section 6: The term for which copyright shall subsist shall, except as otherwise expressly provided by this Act, be the life of the author, the remainder of the calendar year in which the author dies, and a period of fifty years following the end of that calendar year.Definition: A pound-force per square inch (symbol: psi) is an imperial and US customary unit of pressure based on avoirdupois units. Torr to Atmosphere Conversion Example Task: Convert 975 torrs to atmospheres (show work) Formula: Torr ÷ 760 atm Calculations: 975 Torr ÷ 760 1.28289474 atm Result: 975 Torr is equal to 1. In keeping with the Berne Convention, the length of a copyright in Canada is: Next, lets look at an example showing the work and calculations that are involved in converting from torrs to atmospheres (Torr to atm). Canada's specific copyright document can be found at Copyright Board of Canada. Canada is a signatory of the Berne Convention (a document 150+ countries have signed to help protect copyrights) - so even if you aren't Canadian, odds are your country recognizes Canada's copyright. If you have questions relating to our copyright, please submit them on our Contact Us page. Nor may you transmit it or store it in any other website or other form of electronic retrieval system. You may not, except with our express written permission, distribute or commercially exploit the content. php pages on this website (but do not link to the. Do not sell any of our material or include any of our material for sale as part of a larger package.Do not include our material in books, newspapers, magazines, videos, television shows or applications.Do not copy any of our content on to another website (this includes YouTube). ![]() ![]() The material on this website is intended for people to view online or print for personal use only. ![]() We hold the copyright to the content and material on this website. Please try again later.Īs this website is only made possible by the advertisements presented when viewed online, we DO NOT provide copies or consent to copying of our material to be used for offline use. We are sorry but the website is temporarily unavailable due to maintenance downtime or capacity problems. Service Temporarily Unavailable Service Temporarily Unavailable
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |