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Ultraviolet catastrophe:
A shortcoming of the Rayleigh-Jeans formula, that tries to explain the radiancy of a blackbody at several frequencies of the electromagnetic spectrum. It was obviously wrong since as the frequency enhanced, the radiancy enhanced without bound; something quite not observed; it was dubbed the "ultraviolet catastrophe." It was later on reconciled and described by introduction of the Planck radiation law.
Properties of laser: Lasers have applications in various disciplines of science and technology. They also find applications in industry, medicine and defence and space science
Longitudinal Waves and Guitar Strings According to the diagram this pressure wave consists of rarefactions and compressions. The compressions are regions of high pressure, wher
Provide the conditions needed for production of a sustained interference pattern.
Why does it take longer to heat a bucket of water than a cup of water? Because there is extra water in a bucket than in a cup, and more energy has to be put into the bucket of
(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current
Cathode rays are made up of: (1) Positively charged particles (2) Negatively charged particles (3) Neutral particles (4) None of these Ans: (2)Negatively charged pa
how may six digit numbers can be made in which the sum of the digits is even?
Define Hydrogen Rocket? The reaction chamber of a rocket engine is supplied with a mass flow rate m of sufficient oxygen and hydrogen to allow complete burning of the fuel an
why long jump run certain distance before running??
What is a fiber optic? It is long lenses. A cylinder or rod of transparent material forming a core surrounded with an external cladding by a slightly dissimilar material. Ligh
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