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Archimedean solid

Overview page. Subjects: Mathematics.

A convex polyhedron is called semi-regular if the faces are regular polygons, though not all congruent, and if the vertices are all alike, in the sense that the different kinds of face are...

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Overview page. Subjects: Physics.

A type of radiant energy with a wavelength of 0.39 to 0.77 micrometres within the electromagnetic spectrum, which is visible to humans.

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Overview page. Subjects: Astronomy and Astrophysics.

1 A range of electromagnetic energies arranged in order of wavelength or frequency (see electromagnetic spectrum). The emission spectrum of a body or substance is the range of...

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wave dispersion

Overview page.

Alteration of the refractive index (measurement of bending) of a medium with wavelength, such as light. It occurs with all electromagnetic waves but is most obvious at visible wavelengths,...

See overview in Oxford Index