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Galileo Galilei
The famous Galileo Galilei was born Feb. 5, 1564. In the year 1630, at the age of 66, he developed a suction pump which he used to draw underground water up a column. This pump was similar to how a syringe works. -
Evangelista Torricelli
Evangelista Torricelli was born Oct. 15, 1608. At the age of 35, he developed the first barometer in 1643. Torricelli carried on Galileo's work by determining that the limit to the height of the water was due to atmospheric pressure. He then proceeded to invent a closed-end tube that was filled with mercury. This was then supeneded in a dish od mercury. -
Otto Von Guericke and the Vacuum pump
Otto van Guericke was born on Nov. 20, 1602. He created pump that created an extremely strong vacuum, so strong that 16 horses could not pull 2 metal hemipheres apart. He worked on this from 1643-1645. making him 41-43 years old. von Guericke's theory of the what that held the 2 hemispheres together that it was the force of the atmospheric pressure, not the vacuum. -
Blaise Pascal's discovery
The famous Blaise Pascal was born June 19, 1623. At the age of 25 in 1648, Pascal discovered that the pressure of the atmosphere increased as he travelled up a mountain in France, and decreased as he travelled up the mountain. The SI unit for pressure, the Pascal, was names after him. -
Christiaan Huygen
Born April 14, 1629, Christiaan Huygen develeped the manometer at the age of 32. He created the manometer to study the elastic forces in gases. -
John Dalton
Born on Sept. 6, 1766, John Dalton made multiple contrubutions to the field of chemistry. At the age of 35 in 1801, Dalton stated that in a mixture of gases, the total pressure is equal to the sum of the pressure of each gas. The pressure exerted by each gas alone is known as its partial pressure. -
Joseph Louis Gay-Lussac
Joseph Louis Gay-Lussac was born on Dec. 6, 1778. Gay-Lussac observed the law of combining volumes. He noticed that when you combines 2 volumes of hydrogen with one volume of oxygen, two volumes of water were produced. The Gay-Lussac law states that the volumes of gases that interact to give a gaseous product are in the ratio of small whole numbers to each other and that each bears a similar relation to the volume of the product. He did this work in 1808 when he was 30 years old. -
Amedeo Avogadro's Hypothesis
The well known Amedeo Avogadro was born on Aug. 7, 1776. In 1811, he suggested that the pressure in a container is directly proportional to the number of particles in that container. This is known as Avogadro's Hypothesis. He suggested this based on Gay-Lussac' experiments conducted only 3 years earlier. He did this at the age of 35.
