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1 day ago · The moment of inertia, otherwise known as the mass moment of inertia, angular/rotational mass, second moment of mass, or most accurately, rotational inertia, of a rigid body is a quantity that determines the torque needed for a desired angular acceleration about a rotational axis, akin to how mass determines the force needed for a desired acceleration.
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1 day ago · v. t. e. A centripetal force (from Latin centrum, "center" and petere, "to seek" [1]) is a force that makes a body follow a curved path. The direction of the centripetal force is always orthogonal to the motion of the body and towards the fixed point of the instantaneous center of curvature of the path. Isaac Newton described it as "a force by ...
1 day ago · v. t. e. Canonical commutation rule for position q and momentum p variables of a particle, 1927. pq − qp = h / (2 πi). Uncertainty principle of Heisenberg, 1927. The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics. It states that there is a limit to the precision with ...
1 day ago · In quantum mechanics, the angular momentum operator is one of several related operators analogous to classical angular momentum. The angular momentum operator plays a central role in the theory of atomic and molecular physics and other quantum problems involving rotational symmetry. Being an observable, its eigenfunctions represent the ...
1 day ago · Bette Davis and Donald Meek in Broken Dishes (1929). "I was now a bona fide Broadway actress—in a hit," Davis wrote. [2]Ruth Elizabeth Davis, known from early childhood as "Betty", was born on April 5, 1908, [3] in Lowell, Massachusetts, the daughter of Harlow Morrell Davis (1885–1938), a law student from Augusta, Maine, and subsequently a patent attorney, and Ruth Augusta (née Favór ...
1 day ago · Psi is defined in the Journal of Parapsychology as "personal factors or processes in nature which transcend accepted laws" (1948: 311) and "which are non-physical in nature" (1962:310), and it is used to cover both extrasensory perception (ESP), an "awareness of or response to an external event or influence not apprehended by sensory means" (1962:309) or inferred from sensory knowledge, and ...
1 day ago · A motion picture rating system was proposed in the Film and Video Act of 2007, and was passed on December 20, 2007 by the Thai military -appointed National Legislative Assembly, replacing laws which had been in place since 1930. The draft law was met with resistance from the film industry and independent filmmakers.
