Text: Scientists have proven the existence of four fundamental forces of nature: gravity; electromagnetism; the strong force, which holds the nucleus of the atom together; and the weak force, which governs the energy production in stars and is responsible for some forms of radioactivity. NOTE: Strong force is Russell's positive energy and Keely's negative attraction. Weak force is Russell's negative dispersion and Keely's Positive Propulsion. DP 11/1/02

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