Barometer

In 1643 the oldest barometer (Mercury barometer) is invented by an Italian physicist named Evangelista Torricelli.

The items used in his experiment

• Glass tube( opens from the bottom, closed on top)
• The pool of Mercury is located on the bottom of the tube(circular dish surrounding the tube)

How did this experiment work

1. First there is a number of measurements on a scale to track the atmosphere
2. The numbering scale helps those who are doing the test to judge the air pressure by observing where the Mercury stops at
3. The mercury in the tube would match the atmospheric pressure
4. The more pressure forced Mercury more up the tube

- A French scientist named Lucien Vidi invented a new barometer.

- It was called the Aneroid barometer and it was invented 1844

Materials Used

• metal chamber (expands depending on the different atmospheric pressure)
• Different mechanical tools used for measurements

How did this experiment work

• It was a circular display( kinda of set up liked a clock)
• One hand moves clockwise, while the other one moves counterclockwise
• It first starts to change when the weather changes (Ex: rains, storms, warm)
• This tool could track the atmospheric changes in pressure

Many people enjoyed the updated version, because they were much easier to travel with.

~ It was first invented in 1643 (Mercury Barometer)

~ In 1844 the second Barometer was invented (Android Barometer)

~ Now people use digital barometer

This tool was used to match the atmospheric pressure. It was used by early scientist to help them discover data from the atmosphere. And from there the barometer grew more popular and is used by many people still to this day.

From the beginning the barometer was always a scientific tool to measure air pressure. It was only given the nickname "weight of the air" The barometer made lots of changes so people could use the tool on the go and it wasn't too difficult to carry around.

Still to this day barometers are very important.

Fun Fact- Without barometers our technology wouldn't be as good today. Because the digital barometer uses atmospheric pressure data, which strongly helps GPS navigation so you can arrive to your destination. Can you imagine traveling to far places without any help from a GPS?

Barometers can also be used in apps such as the weather forecast.