Changes

== Experimental Proofs ==

== Experimental Proofs ==

# Michelson-Moreley experiment

# Michelson-Moreley experiment

# GPS clocks (general relativity)

# GPS clocks - there are two effects here and both are time dilation. The first is due to special relativity caused by the fact the satellite is in an [[inertial frame of reference]] moving past the ground. The other is due to [[general relativity]] since the craft is further out than someone on the ground of the [[earth|earth's]] gravitational well. The overall effect is for clocks on the satellite to run faster by approximately 38 ms per day.<ref>http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps.html</ref>

# Lifetimes of fast traveling particles such as [[muon]]s produced by [[cosmic rays]] (see [[muon]])

# Lifetimes of fast traveling particles such as [[muon]]s produced by [[cosmic rays]] (see [[muon]])