She used an electrometer.
Babylonians
1995 i believe.
2013
Why would it be hard to discover a planet that is closer to the sun than mercury
They are more portable and can be used for airplane equipment
josh wickam
1623
1230
BAROMETER ---- It's actually a mercury barometer
Red mercury is not a real substance and does not exist. It is a common hoax that has been circulating for many years. Therefore, there is no equipment that contains 500 grams of red mercury.
It is R134a. If it is serviced, DO NOT use any with leak stop as that will ruin a repair shops equipment.