Hi my friends, I comes from China, and I want some English math textbook for undergraduate student in theoretical physics, contains Advanced Mathematics, Linear Algebra, Statistics and Probability Theory, Method of Mathematical Physics, any suggestion pls?
Oh,russ_watters,thanks,I understand!
Just as a white wallpaper projected onto a white board,and someone pass through front of the projector,shut out the part of the light,so part of the white board looks black,though it's a white board.
right?
o?
I think it is similar with black character projected onto the white board and looks black,so do the background (wallpaper),right?
Hi Oerg,u said "A projector displays black by just not emitting light for the required parts",but how we can see the black character on white board?