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Encyclopedia > Physical phenomenon

Physical Phenomena are observable events which are explained by physics or raise some question about matter, light, or spacetime. For example, it was observed by Isaac Newton that while an apple might fall from a tree, the moon, very large and massive, does not fall. See gravity.


A related observation, made by Johannes Kepler after painstaking observations, was that the planet Mars travels in an elliptical orbit.


Another related observation, first made by James Bradley, an astronomer, is that by carefully plotting the position of a nearby star it appears to move in an elipse over the course of a year.


It is a rather commonplace observation that some things are heavier than others, see mass.


If an object is not moving it stays that way until something moves it; if it is moving it keeps on moving, see inertia.


It is hard to get a heavy object moving; it is hard to stop or change the course of a heavy object once it is moving, see momentum.


Niels Bohr, one of the fathers of quantum mechanics, said "No phenomenon is a phenomenon until it is an observed phenomenon."


See also

Related Reading

  • Jeremy Bernstein, A Theory for Everything, Copernicus, An imprint of Springer-Verlag, New York, 1996, hardback, ISBN 0-387-94700-0

  Results from FactBites:
 
Physical phenomenon - Wikipedia, the free encyclopedia (221 words)
A physical phenomenon is a phenomenon that is describable by physics and involved with some form of matter, energy, or spacetime.
Physical phenomena are usually regarded as, at least in theory, subjects of observation - Niels Bohr, one of the fathers of quantum mechanics, is quoted with saying "no phenomenon is a phenomenon until it is an observed phenomenon."
One of the goals of physics is to group phenomena into classes with common causes.
Physical Mediumship (586 words)
Physical mediumship is the process whereby someone, in Spirit, usually known as a spirit operator (as compared to a spirit communicator), works or operates through the mental AND physical energies of the medium and causes something physical to happen on the Earth plane.
Physical mediumship is objective in nature; that is, when the phenomena occur, everyone is able to see and/or hear them.
Physical mediumship should only be practised in properly controlled environments with the correct supervision and safeguards in place to ensure the safety of the medium.
  More results at FactBites »


 

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