Glass bricks are used where people want light allowed through, but still have privacy. What do the bricks do to make this happen?

Question

Please help I have searched everything and can not find the answer.

Answer 1

The Glass Bricks are Translucent which
means light can pass through, but you
cannot see through them. The bricks,
actually, diffuses the light which
allows only a fraction of the light to
pass through.