Non observable (contains GMm or ) | ||
| 1873 modified Newton and forward: | “Original” Newton: |
Gravity force |
| when |
Mass must be |
| (collision time, see [21] ) |
Gravitational constant |
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Observable predictions, identical for the two methods: (contains only GM) | ||
Gravity acceleration |
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Orbital velocity |
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Orbital time |
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Velocity ball Newton cradle |
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Periodicity Pendulum (clock) |
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Frequency Newton spring |
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Gravitational red-shift |
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Observable predictions (from GR): (contains only GM or only ) | ||
Time dilation |
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Gravitational deflection (GR) |
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Advance of perihelion |
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Quantum analysis: |
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Constants needed | G, , and c or , , and c | and indirectly c, but |
Variable needed | one for mass size | one for mass size |