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In particular, Sir Hermann Bondi proposed in 1957 that negative gravitational mass, combined with negative inertial mass, would comply with the strong equivalence principle of general relativity theory and the Newtonian laws of conservation of linear momentum and energy.
The early sources of apergetic theory are science fiction novels of the late nineteenth century, including Percy Greg's Across the Zodiac (1880) and John Jacob Astor's A Journey in Other Worlds (1894), as well as writings on John Worrell Keely's alleged discoveries during that same time period.
Feb 12, 2016 · Gravitational lensing is the bending of light around massive objects, such as a black hole, allowing us to view objects that lie behind it. During a total solar eclipse in May 1919, stars near the ...
Jun 3, 2020 · Astor and Keely. In 1896, "apergy" was used by writer/philanthropist Clara Jessup Bloomfield-Moore for the force behind John Ernst Worrell Keely 's Vibrodyne (aka Keely's Motor). In her "Some Truths About Keely", Bloomfield-Moore identifies apergy as "one of the currents of a triune polar stream of force".
René Descartes. Seminal physical models of the nature of light were developed in parallel with the many empirical discoveries of the 17th century. Two competing models of light, as a collection of fast-moving particles and as a propagating wave, were advanced.
Surprisingly, the idea of a massive body from which light cannot escape dates back to the late 1700s. Independently, John Michell and Pierre-Simon Laplace used Newton’s law of gravitation to show that light leaving the surface of a star with enough mass could not escape.
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In the tenth century CE, the Middle Eastern mathematician Alhazen developed a theory that all objects radiate their own light. Alhazen's theory was contrary to earlier theories proposing that we could see because our eyes emitted light to illuminate the objects around us.
