details or website about focal length pls. Thanks in advance ...
2006-09-07 22:38:46 · 3 answers · asked by solomon.joseph 1 in Education & Reference ➔ Standards & Testing
When you are using a lens, light passes through the lens and is refracted (diverted inwards). The point on the axis of the lens, where all incoming rays of light seem to converge is called the focal point, and the distance of the focal point from the centre of the lens is called the focal length: for more information check the links
2006-09-07 22:45:24 · answer #1 · answered by mockturtl 1 · 0⤊ 0⤋
the distance from the origin to a focus point is called focal length
2006-09-07 22:53:58 · answer #2 · answered by iyiogrenci 6 · 0⤊ 0⤋
The focal length of an optical system is a measure of how strongly it focuses or diverges light.
http://en.wikipedia.org/wiki/Focal_length
2006-09-07 22:41:49 · answer #3 · answered by daddysboicub 5 · 0⤊ 0⤋