Think about it. Think about light maybe bouncing about within the folds of the cloth. Would it help to visualize light, traveling at the speed of light, in slow motion? We can do so with a camera that shoots a trillion frames a second.
This is a MUST WATCH Ted Lecture.
Ramesh Raskar presents femto-photography, a new type of imaging so fast it visualizes the world one trillion frames per second, so detailed it shows light itself in motion.