New posts in Geometric Optics

How do virtual images make any sense?

Do reflected and incident rays interfere?

Why does a pinhole create an image of the Sun?

Why doesn’t a normal window produce an apparent rainbow?

Can we see a point with only one ray or do we need two rays?

Snell's law in vector form

Can a virtual object exist without an observer?

Pattern in scaled down image of very close lines

What is this sort of abstract rainbow?

Why is there a clear mirror image off a rough surface at shallow angles?