1. Einstein’s Special and General Theories of Relativity.
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Einstein’s Special and General Theories of Relativity.

2. Pre-1905 Physics Newton’s Laws Light – wave or particle Ether
Speed of light
Gravity

3. Special Relativity Speed of Light = 300,000km/s for all observers
Laws of Physics same in any inertial frame of reference
E=mc^2

4. Dilation & Contraction
Lorentz Time Slows and Lengths Contract at high speeds.

5. Contraction 0 1 Lorentz Contraction Velocity (%c) Observed Length (m)
0 1

6. Dilation Per Day as experienced by moving observer
V/C Days on Earth Years on Earth .1
1.01
.003 .2
1.02 .4
1.09 .6
1.25 .8
1.67
.005 .9
2.29
.006
.99
7.09
.019
.999
22.37
.061
.9999
70.71
.194
.99999
223.61
.613
707.11
1.937
2236
6.126
19.373
61.262

7. Observation at high speeds

8. General Relativity E=mc^2 Mass = object’s resistance to acceleration
Newton’s laws
Geodesics

9. Observation
1919 British expedition in West Africa

10. Space-time
Gravity- matter causing a curvature of space-time