Olaus%20Roemer - PowerPoint PPT Presentation
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Olaus%20Roemer
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Roemer became curious while observing the orbit of Jupiter's moons ... of Jupiter's moons became shorter as Earth moved closer to Jupiter and became ... – PowerPoint PPT presentation
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Title: Olaus%20Roemer
1
Olaus Roemer
- Discovering the Speed of Light
- Dorna Mohaghegh Feb
2, 2006
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Just So You Know
- Born in Denmark 1644
- Studied at the University of Copenhagen
- Nine years in Royal Observatory of Paris
- Edited Tycho Brahes manuscripts
- Professor of Mathematics and Astronomy
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Discovering the Speed of Light
- Galileo attempted first and failed
- Roemer became curious while observing the orbit
of Jupiters moons - Time elapsed between eclipses of Jupiter's moons
became shorter as Earth moved closer to Jupiter
and became longer as Earth moved farther away.
4
Discovering the Speed of Light
- Hypothesized a finite speed of light
- Used known distances of Earth and Jupiters
orbits to get a rough estimation - 2.3 x 108 m/s
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