Equivalence Principle ·
Free Fall ≡ Floating
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.com · m_i = m_g · Einstein 1907 · foundation of GR
Tested to
10⁻¹⁵
MICROSCOPE
2017
Stage
happiest thought
Test mass (m_g)
Test mass (m_i)
Photon / light ray
Elevator / frame
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.com · Equivalence Principle