Relativity
of Simultaneity
un
seel
.com · Train & platform · Δt′ = −γ v Δx / c² · No absolute now
Frame
platform
Speed
0.60 c
Δt′ (train)
0.0 μs
state
standby
Rear strike / clock
Front strike / clock
Moving train
Plane of "now"
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.com · Relativity of Simultaneity