implosion
An implosion is the sudden collapse of an object as a result of external pressure greater than the internal pressure or other forces that act unbalanced towards the center of the object. The implosion is in contrast to the explosion , which accordingly results from the opposite relationship of forces.
An implosion can occur, for example, when an evacuated picture tube of a television set or (CRT) computer screen is destroyed. The cause of such implosions is the loss of stability of the vessel that is supposed to carry the pressure difference. They are often associated with a loud bang due to the rapidly changing air pressure . Although the debris is initially accelerated into the interior of the destroyed vessel, the resulting collisions only partially slow it down and subsequently fly apart again explosively.
Implosions can also occur without the mechanical destruction of a vessel. For example, during cavitation , which z. B. can occur during the operation of propellers, suddenly blow small, only recently formed steam , since the water pressure surrounding them exceeds their own internal pressure .
Web links
- Implosion of a tank wagon (YouTube 0:18 min)
Individual evidence
- ↑ a b implosion. In: Lexicon of Physics. Spektrum Akademischer Verlag, accessed on March 18, 2014 .
- ↑ Janusz Ozonek: Application of Hydrodynamic Cavitation in Environmental Engineering . CRC Press, 2012, ISBN 0-415-61626-3 , pp. 43 ( limited preview in Google Book search).