# Who discovered the pressure?

## Who discovered the pressure?

Evangelista Torricelli
…of the mercury barometer by Evangelista Torricelli, an Italian physicist-mathematician, in the mid-17th…… …about 9 metres (30 feet), Evangelista Torricelli identified air pressure and invented the barometer.…

## Who discovered the relationship between temperature and pressure?

Gay Lussac
This law is often referred to as Gay-Lussac’s law of pressure–temperature, between 1800 and 1802, discovered the relationship between the pressure and temperature of a fixed mass of gas kept at a constant volume. Gay Lussac discovered this while building an “air thermometer”.

When was pressure invented?

History. 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.

Who invented barometer first?

Barometer/Inventors

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 discovered Charles Law?

Jacques Charles
Born November 12, 1746 Beaugency, Orléanais
Died April 7, 1823 (aged 76) Paris, France
Nationality French
Known for Charles’s law

### What is Boyle’s and Charles Law?

Boyle’s law—named for Robert Boyle—states that, at constant temperature, the pressure P of a gas varies inversely with its volume V, or PV = k, where k is a constant. Charles (1746–1823)—states that, at constant pressure, the volume V of a gas is directly proportional to its absolute (Kelvin) temperature T, or V/T = k.

What did Galileo do for pressure?

The development of the barometer began at the end of the 16th century. Galileo Galilei used water and air in an inverted glass vessel to study temperature. As the air temperature around the glass changed, the air inside the glass expanded or contracted in response, changing the level of the water.

Who discovered Boyle’s Law?

Robert Boyle
Every general-chemistry student learns of Robert Boyle (1627–1691) as the person who discovered that the volume of a gas decreases with increasing pressure and vice versa—the famous Boyle’s law. A leading scientist and intellectual of his day, he was a great proponent of the experimental method.

#### Who created Avogadro’s law?

Amedeo Avogadro
The law was first proposed in 1811 by Amedeo Avogadro, a professor of higher physics at the University of Turin for many years, but it was not generally accepted until after 1858, when an Italian chemist, Stanislao Cannizzaro, constructed a logical system of chemistry based on it.

#### What is the pressure law?

Gay-Lussac’s law, Amontons’ law or the pressure law was found by Joseph Louis Gay-Lussac in 1808. It states that, for a given mass and constant volume of an ideal gas, the pressure exerted on the sides of its container is directly proportional to its absolute temperature.

How was pressure discovered?

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).

Who first measured barometric pressure?

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.