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What element is used in a barometer?
Barometers can use any liquid. A dense liquid that makes for a short column at room temperature, is mercury.
What type of barometer used in aircraft?
Aircraft use an Aneroid Barometer, which uses a bellows and spring to measure changes in the earth's atmosphere from air pressure, unlike mercury or water barometers which use a liquid to measure these changes.
Water is not used as barometric liquid?
Mercury is having a higher specific density ( about 13 times that of water) . So if we want to make a barometer using water it should be at least 13 times the length of mercury barometer that is about 11m so it is advisable to use mercury as a barometric liquid.
What doesn't a aneriod barometer use?
It does not use mercury.
What type of liquid do you use in a thermometer?
Mercury and alcohol [liquid elements]
How can an aneroid barometer give reading in inches of mercury when it doesn't use any mercury?
Good question.Look at it like this if you had two barometers side by side, one a mercury barometer and the other a barometer that reacted to changes in air pressure using some bellows and a spring.Then, as the pressure changed you marked the second barometer positions and noted on the dial the inches reading from the mercury barometer, the second barometer measurement scale would mimic the real mercury barometer even though it did not actually use any mercury.
What is an instrument that measures changes in air pressure using liquid mercury?
Any liquid can actually be use in a tube (barometer) to measure air pressure, but there are various advantages in using mercury for the purpose. 1. Mercury is a shiny liquid (a liquid metal) so it can be easily seen through the glass tube. Other liquid like water are transparent. 2. Mercury is very heavy. So only 76cms of it rises in the tube. Had you been using water for the purpose, you would need a glass tube as long as 55ft. 3. Mercury does not stick to the glass surface inside, so the reading obtained is much more accurate and precise. Remember: Water droplets stick to glass.
When you measure air pressure most accurately you should use a mercury?
A barometer
Did Blaise Pascal invent the aneroid barometer?
Blaise Pascal did not invent the aneroid barometer. Pascal had heard of experiments performed by Evangelista Torricelli using mercury barometers and duplicated this experiment in order to provide further evidence of the existence of vacuums. An aneroid barometer is a barometer that does not employ the use of liquid, mercury in this case. The idea for the aneroid barometer was recorded as being first conceived by German philosopher and mathematician Gottfried Leibniz around 1700. The actual first general use application was created by French inventor Lucien Vidie around 1843, almost 150 years later.
How do you reset a mercury Barometer after travel?
one can use a magnet to push down the indexes and reset it
What are the difference between the mercury barometer and aneroid barometer?
A mercury barometer works by, measuring the height of a column of mercury in a sealed tube, supported by the atmospheric pressure.An aneroid barometer measures the amount of distortion of a sealed metal can, due to changes in atmospheric pressure. The equivalent column of mercury supported by a mercury barometer, can then be calibrated in mmHg by comparison.Both instruments do the same job and can be calibrated in Millibars or mmHg, or both.
What liquid do they use in thermometres?
Mercury.
