[shroh-ding-er, shrey-; German shrœ-ding-uh r] /ˈʃroʊ dɪŋ ər, ˈʃreɪ-; German ˈʃrœ dɪŋ ər/
[er-vin] /ˈɛr vɪn/ (Show IPA), 1887–1961, German physicist: Nobel prize 1933.
Erwin (ˈɛrviːn). 1887–1961, Austrian physicist, who discovered the wave equation: shared the Nobel prize for physics 1933
Austrian physicist who founded the study of wave mechanics when he developed a mathematical equation that describes the wavelike behavior of subatomic particles. Schrödinger’s equation was fundamental to Paul Dirac’s development of quantum mechanics, and he and Dirac shared the Nobel Prize for physics in 1933.
Our Living Language : Schrödinger’s cat is a thought experiment proposed by the physicist and philosopher Erwin Schrödinger. It shows how quantum-mechanical indeterminacy at a microscopic level can cause indeterminacy at a macroscopic level. The indeterminacy can be resolved by observation but entails a paradox. Schrödinger would have us imagine a cat inside a closed box with a tiny bit of a radioactive substance and an apparatus consisting of a Geiger counter, hammer, and flask of cyanide. Over the course of an hour, there is a chance that the radioactive substance might emit an alpha particle, and an equal chance that it might not. If an alpha particle is emitted and hits the Geiger counter, a relay is set in motion whereby the hammer shatters the flask, releasing the gas and killing the cat. Thus, after an hour, there is equal probability of the cat being alive or dead, and an observer can open the box and see which state the cat is in. But until the observation is made, the two possible states, which are mutually exclusive, coexist. In quantum-mechanical terms they are in a condition of superposition. The act of observation changes that, and one state becomes established to the exclusion of the other. In other words, without being observed, the cat does not exist in a particular state at all. It is neither alive nor dead, or it is both alive and dead, depending on how you want to look at it. This thought experiment provides an extreme case of the condition in which small-scale objects always exist. Under the laws of quantum mechanics, electrons, photons, and all other particles are each in a number of superposed states that interact with each other, forming interference patterns, and giving rise to an overall behavior that often seems wavelike. But a measurement made to determine the state that the particle is in destroys the interference patterns and gives rise to different behavior that seems more like that of tiny particles; hence the phenomenon of wave-particle duality. Whether the cat in the box can also be considered an observer in quantum mechanics currently remains unclear.
[er-uh-man-thee-uh n] /ˌɛr əˈmæn θi ən/ noun, Classical Mythology. 1. a savage boar that plagued Arcadia and was captured by Hercules. /ˌɛrɪˈmænθɪən/ noun 1. (Greek myth) a wild boar that ravaged the district around Mount Erymanthus: captured by Hercules as his fourth labour
[er-uh-man-thuh s] /ˌɛr əˈmæn θəs/ noun 1. a mountain in S Greece, in the NW Peloponnesus. 7295 feet (2225 meters). /ˌɛrɪˈmænθəs/ noun 1. Mount Erymanthus, a mountain in SW Greece, in the NW Peloponnese. Height: 2224 m (7297 ft) Modern Greek name Erímanthos (eˈrimanθɔs)
/ɪˈrɪndʒɪəm/ noun 1. any plant of the temperate and subtropical perennial umbelliferous genus Eryngium, with distinctive spiny foliage, metallic blue flower heads, and bluish stems, several species of which are grown as garden plants See also sea holly
/ɪˈrɪŋɡəʊ/ noun (pl) -goes, -gos 1. any umbelliferous plant of the genus Eryngium, such as the sea holly, having toothed or lobed leaves Also called eringo