What is barometer?

A simple mercury barometer indicates a reading of 760 mmHg when used on Earth to measure an atmospheric pressure of 1.0x10^5 Pa. The pressure of air in a space orbit about the Earth is 0.9x10^5 Pa. Explain why the barometer cannot be used to measure...

I receive a flyer in the mail, about applications now being accepted for federal employment, and they are giving a barometer test...and I would like to know what is a barometer test?

I had a friend who once told me "Don't let that be the barometer that makes you decide....". So, what does the term 'barometer' mean in this case?

Aside from a barometer app, what are some cool things I can do with my Samsung/Google Galaxy Nexus and it's built in barometer? Any app recommendations, something more than just logging the changes in pressure? Has anyone figured out any interesting...

as we know height of mercury in barometer is related to weight of air on area of reservoir but if increase the area of reservoir will it change the reading of barometer.Is there any standard area for reservoir if you do'nt understand question just tell...

i dont know this, i got a cool old gauge thing that has temp humidity , and a barometer but i dont know what its for , or what it detects

I'm going to an orientation and the barometer test is included, what the heck is it, and what should i expect?

I'm trying to find a cheap barometer and a hygrometer for a science project, but am having trouble locating them in local stores. Any ideas what stores would carry them? I'm in Atlanta, by the way.