I Dare You!

by peter_budo

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Tag Info

New answers tagged

0

If a converging lens has focal length f, a subject which is position p relative to the lens will generate an image at location q=f/(f/p-1) [the fundamental equation is f/p+f/q=-1]; the ratio of image sizes will be p:q. When p and q have the same sign, the image will be on the same side of the lens as the object, and the size ratio will be positive. When p ...



Top 50 recent answers are included