# How did Evangelista Torricelli invent barometer?

## How did Evangelista Torricelli invent barometer?

The first mercury filled glass tube was generally accepted to have been invented in 1643 by Torricelli, which became known as Torricelli’s mercury barometer. In this he produced a vacuum by filling a glass tube with mercury, inverting it and then submerging the open end in a vessel of mercury.

## Who discovered barometer?

Evangelista Torricelli
Barometer/Inventors

Italian physicist and mathematician Evangelista Torricelli, inventor of the mercury barometer. Two years later, pursuing a suggestion by Galileo, he filled a glass tube 4 feet (1.2 m) long with mercury and inverted the tube into a dish.

Who first measured barometric pressure?

The first person to measure atmospheric pressure was a mathematician by the name of Evangelista Torricelli, in 1643. He did so by using a tube of mercury, closed at the top, held in a bowl of mercury. He noticed that some days the mercury in the tube was at a higher level than other days.

### How did Torricelli’s barometer work?

(The first barometer of this type was devised by Italian physicist and mathematician Evangelista Torricelli in 1643.) The barometer works by balancing the weight of mercury in the glass tube against the atmospheric pressure, much like a set of scales.

### When did Evangelista Torricelli invent the mercury barometer?

1644
It will have a profound impact on the world of science. 1644: Italian physicist Evangelista Torricelli demonstrates the principles of the mercury barometer, an instrument he invented the previous year.

Where did Evangelista Torricelli invent the barometer?

Pisa
Torricelli’s experiment was invented in Pisa in 1643 by the Italian scientist Evangelista Torricelli (1608-1647). The purpose of his experiment is to prove that the source of vacuum comes from atmospheric pressure.

#### How did Evangelista Torricelli contribution 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. Repeated experiments showed that the average pressure of the atmosphere at sea level is equal to the pressure of a column of mercury 760 mm tall.

#### What did Evangelista Torricelli discover about the atom?

Lived 1608 – 1647. Evangelista Torricelli was one of these people. He invented the mercury barometer and deduced from experiments that his device revealed the height of our planet’s atmosphere.

What did Evangelista Torricelli invented in 1643?

barometer
Although Torricelli is credited with inventing the first instrument for measuring the pressure of the atmosphere (the barometer), his discovery was accidental in part. He was primarily interested in creating a vacuum, and in 1643, he filled a 4-foot-long narrow glass tube with mercury and inverted it into a dish.

## Why did Evangelista Torricelli use mercury?

Torricelli surmised correctly that the mercury rose in the tube because of the weight of the atmosphere pressing down on the mercury in the dish, and that the space above the mercury column was a vacuum. Both Plato and Aristotle thought the existence of a vacuum to be impossible, against Nature.