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Transcript 
Einstein’s Cosmic
Speed Limit:
Relativity in
Science Fiction
https://www.youtube.com/w
atch?v=Kj178APgdno
1900 – 1945: The Golden Age of Physics
Two revolutions:
Relativity and Quantum Mechanics
1. Special Relativity
2. General Relativity
You cannot exceed the
speed of light!!!
70 miles per hour
10 miles per
hour
60 miles per hour
Maxwell’s equations
predicted a new kind of
radiation travelling
at 186,000 miles per
second....
V
U
Before Einstein: total speed = U+V
After Einstein: total speed = U+V
1 + UV/c2
How does SF deal with this cosmic speed limit?
1. Accept it (universe ship, time dilation, hibernation)
2. Ignore it (warp factor 8, captain!)
3. Evade it (wormholes...)
Robert Heinlein
Next Week
Aliens.....
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