dipity

NIST

Created by 19yasmina on Mar 10, 2011

Last updated: 03/14/11 at 06:40 PM

• Dipity Timeline Created
  Mar 10, 2011 5:28 PM

• Hans Geiger
  1908

  Invented hand-held machine used to detect radiation in the air. It is now called the Geiger counter.

• William Thomson
  Jul 1, 1824

  Another physicist suggested that at-273 degrees the energy of motion gas molecules must have reached zero.

• Jacques Charles
  Jul 1, 1746

  A French physicist noticed that when a gas cooled, its volume contracted by 1/273.

• Jacques Charles
  Jul 1, 1746

  A French physicist noticed that when a gas cooled, its volume contracted by 1/273

• Temperature
  1742

  Anders Celsius a Swedish astronomer devised a standard scale for the measurement of temperature

• Pendulum clock
  1656

  Christian Huygens, a Dutch physicist, invented the first accurate pendulum clock.

• Vacuums and Pressure
  1643

  Evangelista Torricelliwas the son of an Italian textile worker. He experimented with vacuums and pressure.

• Map-Gerardus Mercator
  1569

  Gerardus Mercator, a Flemish geographer and map-maker, introduced a more accurate way of drawing maps.

• Water clocks
  1200

  A 13-century water clock, built for an Arab sultan.

• The first mechanical clock
  999 AD

  A french monk who in 999 became Pope Sylvester II.