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A "craft using an inertial mass reduction device" (2016), one embodiment of which could be a high speed "hybrid aerospace/undersea craft" able to "engineer the fabric of our reality at the most fundamental level", [7] the patent application for which was supported by the Naval Aviation Enterprise's chief technical officer on the grounds that ...
Houdini performing the Chinese Water Torture Cell. The Chinese Water Torture Cell is a predicament escape made famous by Hungarian-American magician Harry Houdini.The illusion consists of three parts: first, the magician's feet are locked in stocks; next, he is suspended in mid-air from his ankles with a restraint brace; finally, he is lowered into a glass tank overflowing with water and the ...
Bondi pointed out that a negative mass will fall toward (and not away from) "normal" matter, since although the gravitational force is repulsive, the negative mass (according to Newton's law, F=ma) responds by accelerating in the opposite of the direction of the force. Normal mass, on the other hand, will fall away from the negative matter.
A fictitious force is a force that appears to act on a mass whose motion is described using a non-inertial frame of reference, such as a linearly accelerating or rotating reference frame. [1] Fictitious forces are invoked to maintain the validity and thus use of Newton's second law of motion, in frames of reference which are not inertial. [2]
However, the high velocity and lower reaction mass expended for the same thrust allows electric rockets to run on less fuel. This differs from the typical chemical-powered spacecraft, where the engines require more fuel, requiring the spacecraft to mostly follow an inertial trajectory. When near a planet, low-thrust propulsion may not offset ...
In physics, reduced mass is a measure of the effective inertial mass of a system with two or more particles when the particles are interacting with each other. Reduced mass allows the two-body problem to be solved as if it were a one-body problem. Note, however, that the mass determining the gravitational force is not reduced.
Inertial compensators are also used in simulators or rides, making them more realistic by creating artificial sensations of acceleration and other movement. The Disneyland ride “Star Tours: The Adventure Continues” is a fair example of this principle. There are many types of physical devices that can act as inertia dampers:
At 30% c, the difference between relativistic mass and rest mass is only about 5%, while at 50% it is 15%, (at 0.75c the difference is over 50%); so above such speeds special relativity is needed to accurately describe motion, while below this range Newtonian physics and the Tsiolkovsky rocket equation usually give sufficient accuracy.