Quantum Mechanics

Published: 29.09.2011
Updated: 03.12.2011
Quantum Physics, Quantum Theory

also known as quantum physics or quantum theory,

is a branch of physics providing a mathematical description of the wave–particle duality of matter and energy. The theory was developed in 1925 by Werner Heisenberg. Quantum mechanics describes the time evolution of physical systems via a mathematical structure called the wave function. The wave function encapsulates the probability that the system is to be found in a given state at a given time. Quantum mechanics also allows one to calculate the effect on the system of making measurements of properties of the system by defining the effect of those measurements on the wave function. This leads to the well-known uncertainty principle as well as the enduring debate over the role of the experimenter, epitomised in the Schrödinger's Cat thought experiment.

Quantum mechanics differs significantly from classical mechanics in its predictions when the scale of observations becomes comparable to the atomic and sub-atomic scale, the so-called quantum realm. However, many macroscopic properties of systems can only be fully understood and explained with the use of quantum mechanics. Phenomena such as superconductivity, the properties of materials such as semiconductors and nuclear and chemical reaction mechanisms observed as macroscopic behaviour, cannot be explained using classical mechanics...

- Wikipedia


References are pages on which this term or individual has been marked. Select the list of references sorted by 'latest' (found on a page), 'alphabetical' or 'most used' (most frequent occurrence on a page).

Share this page on:
Page glossary
Some texts contain  footnotes  and  glossary  entries. To distinguish between them, the links have different colors.
  1. Heisenberg
  2. Werner Heisenberg
Page statistics
This page has been viewed 5528 times.
© 1997-2023 HereNow4U, Version 4.52
Contact us
Social Networking

HN4U Deutsche Version
Today's Counter: