Heisenberg’s 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…

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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…

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Bohr theory of atom

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…

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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…

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Blackbody radiation

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…

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Quantum Physics history

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,…

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Fundamental Interactions

nuclear physics

There are four kinds of interaction between particles and are responsible for for all processes in the universe from atoms to interaction of the galaxies. The four fundamental interactions found in nature are Strong interaction,…

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Particles and Anti-particles

Electron and Positron: The pair of electron and positron are considered as antiparticles and they have the same mass and spin but have opposite charge. The annihilate with each other when they come in contact…

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