A barometer measures atmospheric pressure to determine weather or altitude changes.
A barometer is an instrument used to measure atmospheric pressure -- the pressure exerted by the atmosphere.
by the earths gravitational pull the barometer can measure the amount of air pressure in the air, also because of carbons gases
Any unit of pressure can be used, such as bar.
A barometer measures air pressure
It is measured in kiloPascals, kPa.
A Barometer
In general, barometric pressure, or atmospheric pressure, drops as you go up in elevation. For example, at 18,000 ft. above sea level, the average barometric pressure is about half the average pressure at sea level (see the related links for charts) However, barometric pressure also varies widely with the weather (weather charts almost always show the movement of low pressure and high pressure zones), so true barometric pressure cannot simply be calculated, but must be measured. In the United States, the National Oceanic and Atmospheric Administration provides hourly barometric readings for many locations across the country (see related National Weather Service measurement link)
Yes, if barometric pressure falls in one part of the world it rises somewhere else. This is because of the principle of action and reaction.
760 mm Hg is the standard barometric (atmospheric) pressure. It is the pressure giving a pillar of mercury (the elemental abbreviation of mercury is Hg) that is 760 millimeters (mm) high.
vapor pressure
Pressure is a measure of force per area. The SI unit of pressure is a Pascal (Pa) which is equivalent to a Newton per meter squared (N/m2).
Yes, Barometric Pressure and Atmospheric Pressure are the same thing. Except one describes what Atmospheric Pressure would be measured in.
NO ... Barometric Pressure is measured in Centimeters or Inches (of Mercury.) Temperature is measured in Degrees Fahrenheit or Degrees Centigrade.
Barometric pressure is the pressure used by the weight of air over a place of Earth's surface, measured by a barometer.
The change in barometric pressure, air pressure, in the last three hours, measured in milibars. See the following link for the symbols that show past change: http://www.hpc.ncep.noaa.gov/images/pressure_trendNEW.gif
Barometric pressure measures the weight of the air.
Barometric pressure is usually measured in inches of mercury, millibars (mb), or hectoPascals (hP).
In the United States, barometric pressure is based on inches - with normal being around 29.9 inches. In other parts of the world, the "SI" or metric units are more commonly used to represent barometric pressure.
blood vessels constrict according to barometric pressure
Low and high pressure systems. Obviously if you have a Low pressure system the barometric pressure will get low. High pressure causes the barometric pressure to rise.
Pressure is often measured in inches of mercury when describing barometric pressure in weather reports. This term is also known as "inches of mercury vacuum".
When the barometric pressure rises it means calm fair weather is coming or is already occurring. When the barometric pressure falls it means foul weather is on the way such as rain and storms and clouds.
A hurricane has very low barometric pressure.