Search results
Results from the WOW.Com Content Network
For example, if a barometer located at sea level and under fair weather conditions is moved to an altitude of 1,000 feet (305 m), about 1 inch of mercury (~35 hPa) must be added on to the reading. The barometer readings at the two locations should be the same if there are negligible changes in time, horizontal distance, and temperature.
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth.The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa), which is equivalent to 1,013.25 millibars, [1] 760 mm Hg, 29.9212 inches Hg, or 14.696 psi. [2]
The 17th century saw the development of the barometer and the Galileo thermometer while the 18th century saw the development of the thermometer with the Fahrenheit and Celsius scales. The 20th century developed new remote sensing tools, such as weather radars, weather satellites and wind profilers, which provide better sampling both regionally ...
Gasparo Berti (c. 1600 – 1643) was an Italian mathematician, astronomer and physicist.He was probably born in Mantua and spent most of his life in Rome. [1] He is most famous today for his experiment in which he unknowingly created the first working barometer. [2]
A hygrometer is an instrument which measures the humidity of air or some other gas: that is, how much of it is water vapor. [1] Humidity measurement instruments usually rely on measurements of some other quantities such as temperature, pressure, mass, and mechanical or electrical changes in a substance as moisture is absorbed.
A siphon barometer is the term sometimes ... siphonic roof drainage does not work as a ... The term "siphon" is used for a number of structures in human and ...
Flight levels are used to ensure safe vertical separation between aircraft. Historically, altitude has been measured using an altimeter, essentially a calibrated barometer. An altimeter measures ambient air pressure, which decreases with increasing altitude following the barometric formula. It displays the corresponding altitude.
The first documented pedobarographic study was published in 1882 and used rubber and ink to record foot pressures. [1] Numerous studies using similar apparatus were conducted in the early- and mid-twentieth century, [1] [2] but it was not until the advent of the personal computer that electronic apparatus were developed and that pedobarography became practical for routine clinical use. [3]