# What did Evangelista Torricelli contribute to the atomic theory?

## What did Evangelista Torricelli contribute to the atomic theory?

Torricelli predicted that the height of the mercury column would change from day to day as the pressure of the atmosphere changed. Today, his apparatus is known as a barometer, from the Greek baros, meaning “weight,” because it literally measures the weight of the atmosphere.

### When did Evangelista Torricelli contribute to the atomic theory?

Torricelli is best known for his invention and, even more importantly, his explanation of the mercury barometer. He did this in in 1643.

#### What did Evangelista Torricelli?

Evangelista Torricelli, (born Oct. 15, 1608, Faenza, Romagna—died Oct. 25, 1647, Florence), Italian physicist and mathematician who invented the barometer and whose work in geometry aided in the eventual development of integral calculus.

Why did Evangelista Torricelli invent barometer?

Evangelista Torricelli became the first scientist to create a sustained vacuum and to discover the principle of a barometer. Torricelli realized that the variation of the height of the mercury from day to day was caused by changes in the atmospheric pressure. Torricelli built the first mercury barometer around 1644.

Who invented atmospheric pressure?

Evangelista Torricelli
The mercury barometer is the oldest type of barometer, invented by the Italian physicist Evangelista Torricelli in 1643. Torricelli conducted his first barometric experiments using a tube of water.

## Who invented the first barometer?

Barometer/Inventors
1644: Italian physicist Evangelista Torricelli demonstrates the principles of the mercury barometer, an instrument he invented the previous year.

### What was the first barometer called?

mercury barometer

#### Who named barometer?

Although Evangelista Torricelli is universally credited with inventing the barometer in 1643, historical documentation also suggests Gasparo Berti, an Italian mathematician and astronomer, unintentionally built a water barometer sometime between 1640 and 1643.

What is the most accurate barometer?

The Best Barometer

• BTMETER Digital Barometer.
• ThermoPro Digital Barometer.
• ThermoPro TP65A Digital Barometer.
• AcuRite 00795A2 Galileo Glass Globe Barometer.
• Lily’s Home Analog Weather Station Barometer.

What units are used for barometric pressure?

A barometer measures atmospheric pressure in units of measurement called atmospheres or bars. An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit).

## Who made the best barometers?

• Bey-Berk WS078 – Best Analog Barometer.
• Fischer Germany Barometer – Best Barometer for Wall Decorating.
• Sun Company AltiLINQ Barometer 205-M – Best Barometer with Altimeter.
• Trac Outdoors 69200 – Best Barometer for Fishing.
• Thomas 6530 – Best Digital Barometer for Home Use.

### Can barometer predict weather?

Barometers measure this pressure. Changes in the atmosphere, including changes in air pressure, affect the weather. Meteorologists use barometers to predict short-term changes in the weather. A rapid drop in atmospheric pressure means that a low-pressure system is arriving.