General physics

General physics

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

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General physics

Electromagnetic wave

Physics; General physics

A transverse travelling wave created by the oscillations of an electric field and a magnetic field. Electromagnetic waves travel at the speed of light, c = 3.00 × 10 8 m/s. Examples include ...

Equilibrium position

Physics; General physics

The stable position of a system where the net force acting on the object is zero.

Frictional force

Physics; General physics

A force caused by the roughness of two materials in contact, deformations in the materials, and a molecular attraction between the materials. Frictional forces are always parallel to the plane of ...

Focal point

Physics; General physics

The point of a mirror or lens where all light that runs parallel to the principal axis will be focused. Concave mirrors and convex lenses are designed to focus light into the focal point. Convex ...

First law of thermodynamics

Physics; General physics

Essentially a restatement of energy conservation, it states that the change in the internal energy of a system is equal to the heat added plus the work done on the system.

Focal length

Physics; General physics

The distance between the focal point and the vertex of a mirror or lens. For concave mirrors and convex lenses, this number is positive. For convex mirrors and concave lenses, this number is ...