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Topic I-3

The Dethroning of the Earth

3.1. Copernicus, Tycho, Kepler
 
 
Precursors:
Pythagoras (582 BC - 496 BC)
Philoaus (~480 BC - ~405 BC)
Heraclides (387 BC - 312 BC)
Aristarchus (310 BC - ~230 BC)
Aryabhata (476-550)
Ibn_al-Shatir (1304-1375)  
 
 
 
 
 
 
 

Copernicus  
 
 
 
 

 
 
 
 
 
 

Tycho Brahe  
 
 
 
 
 
























Johannes Kepler



 
 
 






Kepler's Laws:

1.



2.

3.

 
 
3.2. Galileo: It is still moving



Galileo (1564-1642)

 
 
 
 



 The Inquisition forced him to recant his theories (It is said he said to himself "It is still moving") and put him under house arrest.

He was exonerated by Vatican only in 1980!

 
 
3.3 Newton: The apple and the moon
Isaac Newton (1643-1727)






























































































 
 


References:

Explorations: 1.3, 1.4; Ch.2: Gravity and Motion

Optional Further Reading:

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