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The aneroid barometer is more durable and compact, and much easier to read. The only particular advantage of a Mercury barometer is that it's a direct measurement -- there's no calibration involved. If you can measure the height of the column above the pool and you know the density of mercury, you have the pressure.
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Which instrument is often filled with mercury or colored water or alcohol?
Thermometers are the instrument that is often filled with mercury, colored water, or alcohol. Most early thermometers were made with mercury.
What is an amalgram?
If you mean AMALGAM it is a mercury alloy often used in dental filings. :)
What are inches of vacuum?
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".
How long should the aim of a science experiment be?
If you are writing a practical report it can be very small! Often the aim is, simply stated, the hypothesis you are trying to test.
A person knowledgeable in a wide range of fields is often called what?
I've heard them called a "renaissance man/woman" If they are older, and have lots of practical knowledge in a field, sometimes they are referred to as a "geezer tech."
