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Feb 19, 1473
Nicolas Copernicus
- Appointed as a Churh official of the Catholic Church
- Suggested that the sun was stationary in the centre of the universe, whereby all other celestial bodie rotated around the sun.
- Appointed as a Churh official of the Catholic Church
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Period: Jan 1, 1500 to
Physics - Remembering the Science FREAKS
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Dec 14, 1546
Tycho Brahe
- Studied law and then became intrested in astronomy
- Proposed that the sun and moon revolve around the earth, with a circular motion.
- Corrected atmospheric refraction.
- Used materials such as a sextant, quadrants and an armillary sphere.
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Feb 15, 1564
Gailileo Galilei
- Constructed his own spyglass, building a three-power telescope at the same time.
- Proposed the law of pendulum
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Dec 21, 1571
Johannes Kepler
Developed the laws of planetary motion
- Planets must travel is a pttern orbiting the son, where the sun is known as the focus.
- The speed of the planets differs in regards to the distance from the sun.
- The further a planet is from the sun, the longer it must orbit. -
Henrietta Swanlevitt
- Observed a linear relationship between the luminsoity and the pulsation period of a star. Pulsation period: The time it takes for a cepheid star to alternate between its brightest to its dimmest and back. Luminosity: The measure of brightness of a star Cepheid: A member of a class of luminous variable stars.
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Edwin Hubble
- Possessed the worlds most powerful telescope
- Held evidence that suggested that there are many more galaxies than our own.
- Created his own law, known as hubbles law = Explains that the universe is expanding.
- The Hubble Space telescope was made in his honour.
- The law stated that all objects in space have a doppler shift, which used redshifting to measure the velocity of an object.