The word 'aberration,' meaning a departure from the ordinary, highlights life's deviations. Originating from Latin for 'to wander away,' it describes irregularities in science, optics, and human ...

Fringes of color at the edges of objects in a photograph due to the inability of the camera lens to deal with all wavelengths of light equally. High-quality lenses that use multiple elements generally ...

MAY I correct an obvious mistake of mine which I notice in my letter on spherical aberration appearing in NATURE of December 9?. The second expression for intensity should read: ...

The Journal of Educational Research is a well-known and respected periodical journal that reaches an international audience of educators and others concerned with cutting-edge theories and proposals.

THE nature of the distribution of light round the axial focus of a lens is a problem which has frequently been attacked mathematically. It has been quite successfully solyed for points in the ...