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Created by 19yasmina
on Mar 10, 2011
Last updated: 03/14/11 at 06:40 PM
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Invented hand-held machine used to detect radiation in the air. It is now called the Geiger counter.
Another physicist suggested that at-273 degrees the energy of motion gas molecules must have reached zero.
A French physicist noticed that when a gas cooled, its volume contracted by 1/273.
A French physicist noticed that when a gas cooled, its volume contracted by 1/273
Anders Celsius a Swedish astronomer devised a standard scale for the measurement of temperature
Christian Huygens, a Dutch physicist, invented the first accurate pendulum clock.
Evangelista Torricelliwas the son of an Italian textile worker. He experimented with vacuums and pressure.
Gerardus Mercator, a Flemish geographer and map-maker, introduced a more accurate way of drawing maps.
A 13-century water clock, built for an Arab sultan.
A french monk who in 999 became Pope Sylvester II.