Quantum mechanical tunneling effect or barrier penetration the the process in which a particle is transmitted through a potential barrier of finite width and height even when its energy is less that that of the…

[Continue reading]# Category: Quantum mechanics

## 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…

[Continue reading]## de Broglie’s Hypothesis

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…

[Continue reading]## 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…

[Continue reading]## 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…

[Continue reading]## 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…

[Continue reading]## 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,…

[Continue reading]## Quantum Computers

A classical computer performs operations using classical bits which can be either 0 or 1. Now in contrast a quantum computer uses quantum bits or qubits and they can be both 0 & 1 at…

[Continue reading]## Postulates of Quantum mechanics

Few postulates of Quantum mechanics are stated below: Postulate 1 (describes the state of quantum mechanical system): At a given time the state of quantum mechanical system is defined by specifying a ket belonging to…

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