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Superphysics
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Research
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Berkeley
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De Motus
De Motus
Part 1
What is Force?
Part 2
The Nature of Force
Part 3
The Nature of Force
Section 21
Action and Reaction
Section 30
The soul, mind, or spirit is the principle of motion
Part 4
Action and Reaction
Part 6
The Nature of Motion
Section 52
What is Force?
Section 60
What is Force?
Section 60
What is Force?
