# What was Evangelista Torricelli known for?

## What was Evangelista Torricelli known for?

Evangelista Torricelli, (born Oct. 15, 1608, Faenza, Romagnaâ€”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.

## What 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. Today, his apparatus is known as a barometer, from the Greek baros, meaning “weight,” because it literally measures the weight of the atmosphere.

What did Evangelista Torricelli invent?

BarometerEvangelista Torricelli / InventionsA barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries. Wikipedia

Who invented the mercury barometer?

Evangelista Torricelli
Although he made important contributions to the field of mathematics, Evangelista Torricelli is best known for his invention of the barometer. Born in Faenza, Italy, on Oct. 15, 1608, he began his education there and later (around 1630) studied in Rome.

### Who invented the air pressure?

1643: Evangelista Torricelli conducts Berti’s experiment with mercury instead of water. This leads to the invention of the barometer, which measures atmospheric pressure (a measure of the pressure exerted by the atmosphere on a surface).

### What is the Torricelli experiment?

In the 17th century, Evangelista Torricelli conducted experiments with mercury that allowed him to measure the presence of air. He would dip a glass tube, closed at one end, into a bowl of mercury and raise the closed end up out of it, keeping the open end submerged.

How did Evangelista Torricelli invent the 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 atmospheric pressure?

Galileo described a method of measuring the weight of the air in detail, but for reasons that are not clear his result was in error by a factor of about two. Torricelli surmised that the pressure of the air might be less on mountains, but the first demonstration of this was by Blaise Pascal.

#### What is Torricelli’s explanation?

Torricelli’s theorem, also called Torricelli’s law, Torricelli’s principle, or Torricelli’s equation, statement that the speed, v, of a liquid flowing under the force of gravity out of an opening in a tank is proportional jointly to the square root of the vertical distance, h, between the liquid surface and the centre …

What is the significance of Torricelli experiment of vacuum?

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. It was the first time that a vacuum had been created in the laboratory, and understood as such.

What does Evangelista mean?

evangelist
Evangelista Name Meaning Italian: from Evangelista ‘evangelist’ (a derivative of Greek euangelos ‘bringer of good news’, from eu ‘well’, ‘good’ + angelos ‘messenger’).