1. The Relativistic Universe

2. Newton’s Principia (1687) – Scholium
Galilean Relativity
All inertial observers are equivalent – no preferred frame of reference
Newton’s Principia (1687) – Scholium
Absolute and Relative Time
Absolute and Relative Space
Maxwell’s Electromagnetism (1861/62)
Light is a wave, and waves propagate in a medium (luminiferous ether)
Should be able to measure motion through the ether
Ether models/properties
Partially dragged (Fresnel/Lorentz)
Fully dragged (Stokes/Hertz)
Attempts to measure
Michelson-Morley (1886/87)

9. L' = L/(1-v2/c2)½

10. Note: c2 = 9 x 1016 m2/s2