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Discussion Forum : General Science - Measurements (Q.No. 2)
2.
Reading of a barometer going down is an indication of
Discussion:
35 comments Page 1 of 4.
Shara said:
8 years ago
May it could be explained in terms of vapour pressure. Since it is used for measuring atmospheric pressure, intense heat would increase pressure (more evaporation thus increasing vapour pressure), rainfall (condensation i.e, conversion of vapour to water) will reduce vapour pressure, consequently, decrease in atmospheric pressure.
Api said:
1 decade ago
May it could be explained in terms of vapour pressure. Since it is used for measuring atmospheric pressure, intense heat would increase pressure (more evaporation thus increasing vapour pressure), rainfall (condensation i.e, conversion of vapour to water) will reduce vapour pressure, consequently, decrease in atmospheric pressure.
Pravin avhad said:
1 decade ago
@Appi has explained very well.
Let me try Rain fall means flow of cloud from high press reason to low press reason.
Barometer is press measuring instrument, it gives atmospheric pressure reading, it mean it sense the low pressure at the time of rain fall.
Let me try Rain fall means flow of cloud from high press reason to low press reason.
Barometer is press measuring instrument, it gives atmospheric pressure reading, it mean it sense the low pressure at the time of rain fall.
Shaastrajna said:
9 years ago
Actually, it is a storm which is the correct answer. Because, at extremely low pressure, the gyro-magnetic force of aero-quanta exceedes the electro-pneumomoultramicroscopicsilicovolcano forces in the air. All this results in a gyroscopic thermostorm.
Amit sharma said:
9 years ago
Actually, reading of a barometer going down is an indication of cyclone i.e. heavy rainfall, unstable weather, Thunderstorm. While rapid increase in barometer reading is an indication of anticyclone i.e.calm and stable weather, no rainfall.
Chintu said:
1 decade ago
First of all, barometer is a pressure measuring device and and when there is a storm which is formed due to low pressure in its center barometer should show sudden downfall of reading. Its got nothing to do with rainfall.
Sloka said:
1 decade ago
If the reading is going down very fast then its an indication of storm (within 5-6 hours) otherwise a slow downfall of reading suggests a low pressure area is passing in a nearby region, it may rains.
Devendra kapadne said:
4 months ago
The correct answer is: storm.
A barometer reading going down typically indicates that the atmospheric pressure is decreasing, which is a sign of an approaching storm or low-pressure system.
A barometer reading going down typically indicates that the atmospheric pressure is decreasing, which is a sign of an approaching storm or low-pressure system.
(2)
Ijaz ul haq said:
8 years ago
As the pressure drops the saturation temperature of vapours goes down will start condensation thus an indication of rainfall.
Ramavtar meena said:
8 years ago
Barometer reading downfall causes depression or low pressure rain and sudden fall of reading causes strom.
(2)
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