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General physics

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

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General physics

Radioactive decay constant

Physics; General physics

A specific constant for a particular isotope which is the ratio of the rate of nuclear disintegration per unit time to the total number of radioactive nuclei.

Radioactive decay series

Physics; General physics

Series of decay reactions that begin with one radioactive nucleus that decays to a second nucleus that decays to a third nucleus and so on until a stable nucleus is reached.

Radioactive decay law

Physics; General physics

The rate of disintegration of a radioactive substance is directly proportional to the number of undecayed nuclei.

Rarefaction

Physics; General physics

A part of a longitudinal wave in which the density of the particles of the medium is less than the normal density.

Real image

Physics; General physics

An image which can be projected on a screen.

Rectilinear motion

Physics; General physics

The motion of a body in a straight line.

Reflection

Physics; General physics

The bouncing back of a wave from a boundary.

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