Daniel Gabriel Fahrenheit

Ole Rømer and the Speed of Light

Ole Rømer and the Speed of Light

On October 5, 1644 (or according to the old julian calendar September 25), Danish astronomer Ole Christensen Rømer was born. He became known by the first proof published in 1676 that the speed of light is finite and not infinite, respectively by the guidance, how the speed of light can be calculated by observation of the Jupiter moons. Ole Rømer – Early Years Ole Rømer was born in Århus, Denmark, to merchant and skipper…
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Daniel Gabriel Fahrenheit and the Measurement of Temperature

Daniel Gabriel Fahrenheit and the Measurement of Temperature

On May 24, 1686, Dutch-German-Polish physicist, engineer, and glass blower Daniel Gabriel Fahrenheit was born. He is is best known for his invention of the mercury-in-glass thermometer in 1714, and for developing a temperature scale that is now named after him. Daniel Fahrenheit – Youth and Education Daniel Gabriel Fahrenheit’s parents living in Gdansk, Poland, were Daniel (1656-1701) and Concordia Fahrenheit (1657-1701) (née Schumann, related Runge). The mother came from a well-known Gdañsk…
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