The Origin and Economy of Energy in the Universe

absolutely action and reaction amount of energy amount of heat amount of heat-energy angle astronomers binaries body moving Book cause centre change of direction comet component conservation of energy constant density distance earth effect equal equation ergy eruptions evidence exertion explain fact finite force form of energy globe gravitation greater heat-energy developed hypothesis increase inertia infer intensity invisible Jupiter kinetic energy law of conservation light Lord Kelvin magnitude mass matter measure of force meteors microf molar motion molecular energy moon moving body mystery nature nebula nebular hypothesis Newton orbit overcome parallelogram parallelogram of forces particle perihelion period phenomena photosphere physical physicists planets position potential energy Primosol principle proper motion proportional proposition proved radiated reader resistance rest revolving rotation Scholium Sect space spectroscopic spectroscopic binaries spots stars substance sun's surface temperature theory tidal tidal energy tion truth unit velocity V₁ vis viva volcanic