General physics

General physics

Terms realting to physics that are not fit for other subcategories.

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General physics

Jet propulsion

Physics; General physics

The force provided by a jet engine in driving an aircraft or other vehicle forward.

Marconi

Physics; General physics

Italian scientist who built the first practical antenna. In 1901, he successfully sent signals across the Atlantic Ocean.

Propellant

Physics; General physics

A substance that is used to push something forward with great power. Rocket fuel and the gas used in spray cans are propellants.

Radio telescope

Physics; General physics

An instrument that is used to observe or study distant objects by gathering the radio waves that come from them.

Stress

Physics; General physics

A force that changes the shape and size of something by squeezing or stretching it.

The Wigner–Eckart theorem is a theorem of representation theory and quantum mechanics. It states that matrix elements of spherical tensor operators on the basis of angular momentum eigenstates can be ...

Variational method

Physics; General physics

In quantum mechanics, the variational method is one way of finding approximations to the lowest energy eigenstate or ground state, and some excited states. This allows calculating approximate wave ...