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Timeline of the Measurement of Pressure

By amanders0n
  • Period: Jan 1, 1500 to

    Timeline of the Measurement of Pressure

  • Feb 15, 1564

    Galileo Galilei

    Galileo Galilei
    Galileo Galilei was born on February 15, 1564. He died January 8, 1642. He lived to be 78 years old. At age 66, in the year 1630 he developed the suction pump. He used air to draw underground water up through a column, very similar to how a syringe draws up water. However, he was confused as to why there was a limit for for the height of the water raised.

  • Otto von Geuricke

    Otto von Geuricke
    Otto von Geuricke was born on Nov 20, 1602 and died on May 11, 1686. He was 84 years old. Between the ages of 41-43, he made a pump that could create a vacuum so strong that a team of 16 horses could not pull two metal hemispheres apart. He reasoned that the hemispheres were held together by the mechanical force of the atmospheric pressure rather than the vacuum.

  • Evangelista Torricelli

    Evangelista Torricelli
    He was born on Oct 15, 1608 and died on Oct 25, 1647.
    At age 35 In 1643, he developed the first barometer. He discovered that the limit to the height Galileo's pump could draw water was because of atmospheric pressure.
    Torricelli invented a closed-end tube filled with mercury that was then suspended in a shallow dish filled with liquid mercury. The height of the column of mercury in the tube (measured in mmHg) equalled the atmospheric pressure that acted on the mercury in the pan.

  • Christiaan Huygens

    Christiaan Huygens
    Christiaan Huygens was born on April 14, 1629 and died on July 8, 1695, He was 66 years old. At age 32 in 1661, he developed the manometer to study the elastic forces in gases.

  • Blaise Pascal

    Blaise Pascal
    Blaise Pascal was born on June 19, 1693 and died on August 19, 1662. He was 38 years old. At age 25, Pascal used Torricelli's barometer and travelled up and down a mountain in southern France. HE realized that the pressure of the atmosphere increased as he moved down the mountain. Sometime later, the SI unit of pressure, the Pascal, was named after this man.

  • John Dalton

    John Dalton
    John Dalton was born on September 6, 1766 and died on July 27, 1844. At age 35 in 1801, he stated that in a misture of gases the total pressure is equal to the pressure of each gas, as if it were in a container all by itself. The pressure exerted by each gas is called its partial pressure.

  • Amadeo Avagadro

    Amadeo Avagadro
    He was born on August 8, 1776 and died July 9, 1856. In 1811, at 35, he suggested from Gay-Lussac's experiments conducted only three years earlier, that the pressure in a container is directly proportional to the number of particles in the container (Known as Avagadro's Hypothesis). This can be demonstrated by blowing up a balloon. The more are that is add, the larger the container becomes due to an increase of pressure.

  • Joseph Louis Gay-Lussac

    Joseph Louis Gay-Lussac
    Joesph was born on December 6, 1778 and died on May 9, 1850. At age 30 in 1808, Joesph observed the law of combining volumes. For example. he noted that two volumes of hydrogen combined with one volume oxygen form one volume water.