General physics

General physics

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

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General physics

Pascal's law

Physics; General physics

The pressure exerted on a liquid is transmitted equally in all directions.

Snell's law

Physics; General physics

The ratio of sin i to sin r is a constant and is equal to the refractive index of the second medium with respect to the first.

Stefan-Boltzmann law

Physics; General physics

The amount of energy radiated per second per unit area of a perfectly black body is directly proportional to the fourth power of the absolute temperature of the surface of the body.

Young's modulus of elasticity

Physics; General physics

The ratio of normal stress to the longitudinal strain produced in a body.

British thermal unit (Btu)

Physics; General physics

The amount of energy or heat needed to increase the temperature of one pound of water one degree Fahrenheit (abbreviated Btu).

On this scale, the ice-point (the lower fixed point) is taken as 273.15K and the (the upper fixed point) is taken as 373.15K. The interval between these two points is divided into 100 equal parts. ...