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Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result. The others are experimental, meaning that there is a difficulty in creating an experiment to test a proposed theory or investigate a phenomenon in greater detail.
Schrödinger's cat. Schrödinger's cat: a cat, a flask of poison, and a radioactive source connected to a Geiger counter are placed in a sealed box. As illustrated, the quantum description uses a superposition of an alive cat and one that has died. In quantum mechanics, Schrödinger's cat is a thought experiment concerning quantum superposition.
Wellcome V0005861. Torricelli Invented the mercury barometer, recorded in the books of Camille Flammarion (1923) Torricelli's experiment was invented in Pisa in 1643 by the Italian scientist Evangelista Torricelli (1608-1647). The purpose of his experiment is to prove that the source of vacuum comes from atmospheric pressure.
t. e. A Bell test, also known as Bell inequality test or Bell experiment, is a real-world physics experiment designed to test the theory of quantum mechanics in relation to Albert Einstein 's concept of local realism. Named for John Stewart Bell, the experiments test whether or not the real world satisfies local realism, which requires the ...
The Magdeburg hemispheres were invented by German scientist and mayor of Magdeburg, [1] Otto von Guericke, to demonstrate the air pump that he had invented and the concept of atmospheric pressure. Speculation varied about the contents of the sphere. Many thought it was simply empty, while others argued the vacuum contained air or some finer ...
Monte Carlo methods, or Monte Carlo experiments, are a broad class of computational algorithms that rely on repeated random sampling to obtain numerical results. The underlying concept is to use randomness to solve problems that might be deterministic in principle.
Bell tests. BICEP and Keck Array. Coincidence method. Discovery of the neutron. Large Hadron Collider experiments. List of Super Proton Synchrotron experiments. Precision tests of QED. Tests of special relativity. Tests of relativistic energy and momentum.
In physics, the monkey and hunter is a hypothetical scenario often used to illustrate the effect of gravity on projectile motion. [1] It can be presented as exercise problem or as a demonstration. The essentials of the problem are stated in many introductory guides to physics. [2] [3] In essence, the problem is as follows: