Natural radioactivity

radioactive

In studying the florescence and phosphorescence of compounds irradiated with visible light, Bacquerel, in 1896, performed a crucial experiment which led to a deeper understanding of the properties of the nucleus of an atom. After illuminating¬† some pieces of uranium-potassium sulfate with visible light, Bacquerel wrapped them in black paper and separated the package from…

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Special Relativity

gravity-fabric

In 1905 Albert Einstein purposed how measurement of time and space are affected by motion between an observer and the object that is being observed. He called this theory the theory of Relativity and there are Special theory of relativity and General theory of relativity and both theories were worked out by Einstein. We will…

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Heisenberg’s uncertainty Principle

Heisenbergs Uncertainty Principle

The statement of Heisenberg’s uncertainty Principle is something like this “it is impossible to determine precisely and simultaneously two complementary variables to arbitrary accuracy.” These pairs of variables are called canonical conjugate and example of such variable pairs includes position and momentum, energy and time, angular momentum and angle etc. The Heisenberg’s uncertainty Principle for…

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de Broglie’s Hypothesis

nuclear physics

De Broglie in 1923 suggested that wave particle duality must be universal, that is all material particles should also display a dual wave particle behavior. To put it in other words all material particles, just like photons can have wave like aspects. Let is consider a photon of frequency . Then its energy is given…

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Bohr theory of atom

quantum-mechanics

Bohr theory of atom is one of the initial achievement and application of quantum mechanics or old quantum mechanics as most would call it. It was able to explain the spectrum of hydrogen atom. Basic postulates of Bohr theory of atom are a. An electron cannot revolve around the nucleus in all possible orbits as…

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Photoelectric effect

Photoelectric effect

Photoelectric effect is one of the initial phenomena which proved the quantization of light. It was discovered by Hertz in 1887 and Thomson in 1899 confirmed that it was electron that was responsible for photoelectric effect. Einstein was the scientist behind more detail and elaborate explanation of photoelectric effect. He postulated his theory on photoelectric…

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Blackbody radiation

blackbody_radn_curves

A blackbody is an object that is perfect absorber of radiation. It is a material object that absorbs all radiation falling on it and hence appears black under reflection. When an object is heated, it radiates electromagnetic energy as a result of thermal agitation of electrons on its surface. The intensity of this radiation depends…

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Quantum Physics history

quantum-mechanics

Quantum mechanics is a framework which can be used to explain and predict various physical systems like nuclei, atoms and radiation or molecules. End of 19th century physics was dominated by classical or Newtonian mechanics, thermodynamics and electromagnetic theory. These theories were used to explain motion of¬† material bodies, radiation studies, interaction of matter and…

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LaTeX Symbols and using them to write Equations

quantum-mechanics

LaTeX is a high-quality typesetting system; it includes features designed for the production of technical and scientific documentation. LaTeX is the de facto standard for the communication and publication of scientific documents. LaTeX is available as free software. Latex has been widely used in the field of physics and mathematics where writing equations is a…

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