Oral Exam Preparation Flashcards
Inventor of the Mercury Barometer
Italian physicist Evangelista Torricelli in 1643
It has a glass tube that is closed at the top and open at the bottom.
Mercury Barometer
Evangelista Torricelli invented this first before moving to mercury, all because of probably suspicion of using witchcraft.
Water Barometer
A mercury barometer has a glass tube that is closed at the top—
and open at the bottom
The mercury in the tube will adjust itself to match what?
The atmospheric pressure above the dish
As the pressure increases the mercury will?
Pressure will force the mercury up the tube.
The mercury tube has markings, why?
To tell where the mercury stops and what the air pressure is
He invented the Aneroid Barometer in 1844.
French scientist Lucien Vidi
It has a sealed metal chamber that expands and contracts, depending on the atmospheric pressure around it.
Aneroid Barometer
The aneroid barometer has a circular display that indicates the?
Present number of atmospheres, much like a clock.
Some aneroid barometers use a mechanical tool to track the changes in atmospheric pressure over a period of time. These aneroid barometers are called?
Barographs
Barographs are barometers connected to needles that make marks on a roll of?
adjacent graph paper.
The barograph records the number of atmospheres on the ______ axis and units of time on the ______.
-Vertical
-horizontal