What do you mean by the term density
What do you mean by the term density? Briefly explain it.
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Density is the physical feature or characteristic and is a measure of mass per unit of volume of the material or substance. This is a measurement of the quantity of matter in a specific volume of something.
Planck radiation law: The law which explained blackbody radiation better than its precursor, therefore resolving the ultraviolet catastrophe. This is based on the supposition that electromagnetic radiation is quantized. Q : Elementary particles concepts Write Write down any two elementary particles that have nearly infinite life time?
Write down any two elementary particles that have nearly infinite life time?
Hawking radiation (S.W. Hawking; 1973): The theory which black holes emit radiation similar to any other hot body. The virtual particle-antiparticle pairs are continuously being made in supposedly empty space. Infrequently, a pair wil
What do you mean by communication? Illustrate in brief.
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Defining Aberration: The obvious change in the position of a light-emitting object due to the fidelity of the speed of light and the
Copernican principle (N. Copernicus): The idea, recommended by Copernicus, that the Sun, not the Earth, is at the center of the earth. We now know that neither idea is accurate (that is, the Sun is not even situated at the center of o
Tipler machine: The solution to Einstein's equations of general relativity which permits time travel. A tremendously dense (that is, on the order of the density of neutron star matter), infinitely-long cylinder that rotates very quickly can form close
Josephson effects (B.D. Josephson; 1962): Electrical effects examined whenever two superconducting materials are separated by a thin layer of the insulating substance.
Planck equation: The quantum mechanical equation associating to the energy of a photon E to its frequency nu: E = h nu.
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