In physics, and more specifically, quantum mechanics, the Afshar experiment is an optical experiment, devised by Shahriar S. Afshar in 2004, that is claimed to have disproved the Niels Bohr's principle of complementarity. Since this principle is a central feature of quantum mechanics, the proper interpretation of the experiment has engendered some controversy in the physics community. This controversy has been mostly limited to blogs, physics colloquia, and arXiv e-print archives; as of 2006, neither a description of the experiment, nor any discussion of its theoretical interpretation, has been published in a refereed physics journal. ...more on Wikipedia about "Afshar experiment"
BESS is a particle physics experiment carried by a balloon. BESS stands for Balloon-borne Experiment with Superconducting Spectrometer. It is in fact a series of experiments that started in 1993, and its current incarnation, BESS-Polar, was circling the Antarctic from December 13 to December 21, 2004, for a total of 8 days 17 hours and 2 minutes. ...more on Wikipedia about "BESS (experiment)"
A Cartesian diver is a classic science experiment, named for René Descartes, in which an eye dropper or other container open only at the bottom (the " diver") is placed in a much larger container with flexible walls, such as a 2-liter soft drink bottle, and adjusted so it barely floats at the top of the water in the larger container. ...more on Wikipedia about "Cartesian diver"
* W. de Sitter, "A proof of the constancy of the velocity of light," Kon. Acad. van Weten. 15 (2) 1297-1298 (1913). ...more on Wikipedia about "De Sitter double star experiment"
The double-slit experiment consists of letting light diffract through two slits producing fringes on a screen. These fringes or interference patterns have light and dark regions corresponding to where the light waves have constructively and destructively interfered. The experiment can also be performed with a beam of electrons or atoms, showing similar interference patterns; this is taken as evidence of the " wave-particle duality" predicted by quantum physics. Note, however, that a double-slit experiment can also be performed with water waves in a ripple tank; the explanation of the observed wave phenomena does not require quantum mechanics in any way. The phenomenon is quantum mechanical only when quantum particles, such as atoms or electrons, manifest as waves. ...more on Wikipedia about "Double-slit experiment"
In physics, the Franck-Hertz experiment was an early physics experiment that provided support for the Bohr model of the atom, a precursor to quantum mechanics. In 1914, physicists James Franck and Gustav Ludwig Hertz sought to experimentally probe the energy levels of the atom. The now-famous Franck-Hertz experiment elegantly supported Niels Bohr's model of the atom, with electrons orbiting the nucleus with specific, discrete energies. Franck and Hertz were awarded the Nobel Prize in Physics in 1925 for this work. ...more on Wikipedia about "Franck-Hertz experiment"
The Gold foil experiment, or Geiger-Marsden experiment was an experiment done by Hans Geiger and Ernest Marsden in 1909, under the direction of Ernest Rutherford at the Physical Laboratories of the University of Manchester which led to the downfall of the plum pudding model of the atom. ...more on Wikipedia about "Gold foil experiment"
Gravity Probe A (GP-A) was a satellite-based experiment to test Einstein's theory of general relativity performed by the Smithsonian Astrophysical Observatory. It used a MASER to measure the rate change of a clock in lower gravity with high precision. ...more on Wikipedia about "Gravity Probe A"
Heron's fountain is a hydraulic machine invented by the first century inventor, mathematician, and physicist Heron, also known as Hero of Alexandria. ...more on Wikipedia about "Heron's fountain"
The Ives-Stilwell experiment exploits the Transverse Doppler effect (TDE) described by Albert Einstein in his 1905 paper. ...more on Wikipedia about "Ives-Stilwell experiment"
The Kelvin water dropper is a type of electrostatic generator, which uses falling water drops to generate voltage differences by utilizing the electrostatic induction occurring between interconnected, oppositely charged systems. ...more on Wikipedia about "Kelvin water dropper"
The Kennedy-Thorndike experiment ('Experimental Establishment of the Relativity of Time'), first conducted in 1932, is a modified form of the Michelson-Morley experimental procedure. The modification is to make one arm of the classical MM apperatus very short. It served as a test for Special relativity to verify time dilation: according to special relativity, no phase shifts will be detected while the earth moves around the sun, while such would result from length contraction alone. ...more on Wikipedia about "Kennedy-Thorndike experiment"
The Lifter is an electrokinetic, or electrohydrodynamic device. The term "Lifter" was coined by Transdimensional Technologies, but its original design dates back to the 1960s, an era in which EHD experiments were at their peak. In its basic form, it simply consists of two parallel conductive electrodes, one in the form of a fine wire and the other a foil skirt with a smooth round surface, which when powered by high voltage in the range of a few kilovolts, produces thrust. It forms part of the EHD thruster family, but is a special case in which the ionisation and accelerating stages are combined into a single stage. ...more on Wikipedia about "Lifter (ionic propulsion device)"
The Magdeburg hemispheres were one of Otto von Guericke's most interesting experiments, designed to demonstrate the air pump he had invented. They were two hollow copper hemispheres a little over a foot in diameter which fitted together so well that they could hold a vacuum. The air was pumped out from between them, and they were then held firmly together by the air pressure of the surrounding atmosphere. ...more on Wikipedia about "Magdeburg hemispheres"
The text you are reading is from shortopedia
The Michelson-Morley experiment, one of the most important and famous experiments in the history of physics, was performed in 1887 by Albert Michelson and Edward Morley at what is now Case Western Reserve University, and is considered to be the first strong evidence against the theory of a luminiferous aether. ...more on Wikipedia about "Michelson-Morley experiment"
The Nth Country Experiment was an experiment conducted by Lawrence Livermore National Laboratory starting in May 1964 which sought to assess the risk of nuclear proliferation. The experiment consisted in paying three recent young physicists who had just received their PhDs, though had no prior weapons experience, to develop a working nuclear weapon design using only unclassified information, and with basic computational and technical support. "The goal of the participants should be to design an explosive with a militarily significant yield", the report on the experiment read, "A working context for the experiment might be that the participants have been asked to design a nuclear explosive which, if built in small numbers, would give a small nation a significant effect on their foreign relations." ...more on Wikipedia about "Nth Country Experiment"
The purpose of Robert Millikan's oil-drop experiment ( 1909) was to measure the electric charge of the electron. He did this by carefully balancing the gravitational and electric forces on tiny charged droplets of oil suspended between two metal electrodes. Knowing the electric field, the charge on the droplet could be determined. Repeating the experiment for many droplets, it was found that the values measured were always multiples of the same number. This was taken to be the charge on a single electron: 1.602 × 10−19 coulombs ( SI unit for electric charge). ...more on Wikipedia about "Oil-drop experiment"
PAMELA is an acronym for Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics. ...more on Wikipedia about "PAMELA"
(Problematic physics experiments) * Eddington (1919) – test of general relativity’s light-bending predictions ...more on Wikipedia about "Problematic physics experiments"
In physics, there are many experiments which consist of shining light upon thin slits, and observing the wave behaviour of light past these slits: ...more on Wikipedia about "Slit experiment"
In quantum mechanics, the Stern-Gerlach experiment, named after Otto Stern and Walther Gerlach, is a celebrated experiment in 1920 on deflection of particles, often used to illustrate basic principles of quantum mechanics. It can be used to demonstrate that electrons and atoms have intrinsically quantum properties, that measurement in quantum mechanics affects the particles measured, and that quantum states are necessarily described by complex numbers. ...more on Wikipedia about "Stern-Gerlach experiment"
In experimental physics, a test theory tells experimenters how to perform particular comparisons between specific theories, or between specific classes of theory. ...more on Wikipedia about "Test theory"
In physics, the purpose of the torsion bar experiment is to estimate the gravitational constant. The torsion bar experiment was originally proposed by John Michell, who constructed a torsion bar apparatus, but Michell died without completing the experiment. After his death in 1793 the apparatus passed to Francis John Hyde Wollaston, who gave it to Henry Cavendish. Cavendish rebuilt the apparatus, staying close to Michell's plan. Cavendish carried out a series of careful experiments reported in the Philosophical Transactions in 1798. ...more on Wikipedia about "Torsion bar experiment"
The Trouton-Noble experiment attempted to detect motion of the Earth through the luminiferous aether, and was conducted in 1901– 1903 by Frederick Thomas Trouton (who also developed the Trouton's ratio) and H. R. Noble. It was based on a suggestion by George FitzGerald that a charged parallel-plate capacitor moving through the aether should orient itself perpendicular to the motion. Like the earlier Michelson-Morley experiment, Trouton and Noble obtained a null result: no motion relative to the aether could be detected. ...more on Wikipedia about "Trouton-Noble experiment"
This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia . Direct links to the original articles are in the text.
If you use exact copy or modified of this article you should preserve above paragraph and put also : It uses material from the Shortopedia article about "Physics experiments".
|MAIN PAGE||MAIN INDEX||CONTACT US|