How is the magnitude of atmospheric pressure determined?

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SUMMARY

The magnitude of atmospheric pressure is defined as 760 mmHg, which is a standard measurement used in meteorology. This value is derived from the height of a mercury column in a barometer, which reflects the weight of the atmosphere above it. The calculation of atmospheric pressure can be understood both practically, through the use of barometers, and theoretically, using the principles of fluid mechanics and gas laws.

PREREQUISITES
  • Understanding of barometric pressure measurement
  • Basic principles of fluid mechanics
  • Knowledge of gas laws, particularly Boyle's Law
  • Familiarity with meteorological instruments
NEXT STEPS
  • Research the operation of mercury barometers
  • Explore the principles of fluid mechanics in atmospheric science
  • Study Boyle's Law and its applications in meteorology
  • Investigate alternative methods for measuring atmospheric pressure, such as aneroid barometers
USEFUL FOR

Meteorologists, atmospheric scientists, students studying physics or environmental science, and anyone interested in understanding weather measurement techniques.

kaushal
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:biggrin:please tell me how it was calculated, atmospheric pressure = 760mmHg, practically and theoritically :devil:
 
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kaushal said:
:biggrin:please tell me how it was calculated, atmospheric pressure = 760mmHg, practically and theoritically :devil:

Practically.

Maybe here you can find the aswer.

http://www.usatoday.com/weather/wbaromtr.htm

Cheers.
 

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