Nordtvedt Effect ·
Lunar Laser Ranging
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.com · strong equivalence principle · η = 4β − γ − 3
Round trip
≈ 2.5 s
Range σ
few mm
Phase
—
Earth (strongly self-bound)
Moon + retroreflector
Sun / laser pulse
Predicted 13 m × η polarization
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.com · The Nordtvedt Effect and Lunar Laser Ranging