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Galileo Galilei
Galileo Galilei was born in Pisa, Italy on February 15, 1564 and died at the age of 78. He was the first person to publish a book saying that a vacuum was possible, but he did not mention air having weight or pressure. the scientist also created the law of pendulum stating the period of each swing of lamp was the same. -
Evangelista Torricelli
October 15, 1608, in Faenza, Italy and died October 22, 1647 at the age of 39. He filled a narrow tube with mercury and upending it in a bowl of mercury, Torricelli realized that the variation of the height of the mercury from day to day was caused by changes in the atmospheric pressure. he was 36 when he discovered this. He was also very closeto Galilei, recieving advice from him in his studies -
Blaise Pascal
Born June 19, 1623, and died at Paris on Aug. 19, 1662 at the age of 39
Pascal proved by experimentation in 1648 that the level of the mercury column in a barometer is determined by an increase or decrease in the surrounding atmospheric pressure rather than by a vacuum, as previously believed. he was 25 when he discovered this.
Pascal is also well known for creating the first known calculator -
Otto von Guericke
Otto von Guericke 1602 - 1686 died at the age of 84. He invented the air pump, used to create a partial vacuum at age 48. Also served as the mayor or Burgermeister of Magdeburg, Germany from 1646 to 1676. -
Christian Huygens
Born April 14, 1629, and died on July 8, 1695 at the age of 66
Huygens invented the manometer (a device used to measure the pressure of liquids and gases), in 1661 at the age of 32.
Huygens also invented the first pendulum clock in 1656. -
John Dalton
John Dalton was born September 6, 1766 Dalton died July 26, 1844 in Manchester, England at the age of 78.
In 1803 this scientific principle officially came to be known as Dalton's Law of Partial Pressures. Dalton's Law primarily applies to ideal gases rather than real gases, due to the elasticity and low particle volume of molecules in ideal gases.
he created the law at the age of 37. John Dalton was also a meteorologist at one point. -
Amedeo Avogadro
was born in 1776 died in 1856 at the age of 80.
Avogadro's Law (Avogadro's theory; Avogadro's hypothesis) is a principle stated in 1811 at the age of 35.
the law is v/n=k, and states that equal volumes of gases, at the same temperature and pressure, contain the same number of molecules.
Avogadro was also known to be quite the ladies man
