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Author Archives: admin

what are Elastic and Inelastic Collisions?

What is a Collision? In a collision a relatively large force acts on each colliding particle for a relatively short time. The basic idea of a collision is that the motion of the colliding particles (or of at least one of them) changes rather abruptly and that we can make a relatively clean separation of time that are “before the ...

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Difference between Inductor and capacitor

What is Inductor? When a length of wire is formed into a coil,it becomes a basic inductor. The term coil and inductor are used interchangeably.Current through the coil produced an electromagnetic field, as illustrated. The magnetic lines of force around each loop (turn) in the winding of the coil effectively add to the lines of force around the adjoining loops, ...

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What is a radioactive isotope

What are the uses of Radioisotopes? Nuclei which do not emit radiations naturally are called stable nuclei. In general, most of the nuclei with atomic number 1 to 82 are stable nuclei. While the elements whose atomic number is greater than 82 are naturally unstable. They emit different types of radiations, all the time, and hence continuously change from one ...

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examples of Nuclear Fusion

Nuclear Fusion: “Such a nuclear reaction in which two light nuclei merge to form a heavy nucleus is called fusion reaction” We known that the energy given out per nucleon per fission of heavy element like that of uranium is 0.9 MeV. It is due to the fact that the binding energy per nucleon of the fission fragments is greater ...

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Nuclear fission Vs nuclear fusion

Nuclear Fission: “Such a reaction in which a heavy nucleus like that of uranium splits up into two nuclei of equal size along with the emission of energy during the reaction is called fission reaction” Otto Hahn and Fritz Strassmann of Germany while working upon the nuclear reactions made a starling discovery. They observed that when slow moving neutrons are ...

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Radioactive elements

What is Radioactivity? It has been observed that those elements whose charge number Z is greater than 82 are unstable. Some invisible radiations, that can effect the photographic plates emanate out of these elements. Such elements are called radioactive and the phenomenon is called radioactivity. The radiations coming out of the radioactive elements are called alpha (α) , beta (β),and ...

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Half Life

What is Half Life of Radioactive Element? “The Time during which half of the unstable radioactive nuclei disintegrate is called the half-life of the sample of radioactive element.” We have seen that whenever an α or β-particle is emitted from a radioactive element,it is transformed into some other element. This radioactive decay process is quite random and is not subjected to any ...

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Heisenberg uncertainty principle proof

What is the  uncertainty principle of Heisenberg? Uncertainty principle is defined as:”It is impossible to measure simultaneously both the position and momentum of a microscopic particle with accuracy or certainty.” When we are studying a large moving object say a planet,then we can follow its definition path on which it travels.If we know its initial position and momentum,then we can ...

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zener diode voltage regulator

what is Zener Diode? A major application for zener diodes is as a type of voltage regulator for providing stable reference voltages for use in power supplies,voltmeters,and other instruments. In this section, you will see how the zener maintains a nearly constant de voltage under the proper operating conditions. You will learn the conditions and illustrations for properly using the ...

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Electromagnetic induction applications

Electromagnetic Induction: As soon as Oersted discovered that electric currents produce magnetic fields,many scientist began to look for the reverse effect, that is, to cause an electric current by means of a magnetic field. In 1831 Michael Faraday in England and at the same time Joseph Henry in USA observed that an emf is set up in a conductor when ...

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