Bicuriouscool saidThis is ridiculous. You cant see light itself because we see, even the camera sees, things by capturing reflected light. And light does not reflect light, which is essential. I mean the light which is being caught on camera should reflect the light through which we gonna see the light. And even if the photos do collide (weird assumption though), the momentum of the light being seen should change and it should no longer be in a straight line. Anyway i'll see the videos in the morning, its mid night here
That's exactly what I was thinking. It makes no sense at all. How can you see a photon if it isn't going directly to your eye/camera?
Photons act like a particle and a wave simultaneously. When they collide, they split and create an interference pattern. The reason your eye (and the camera) is able to detect them is because they are splitting and bouncing everywhere as they travel.
BTW that experiment was not just one single photon. It was a group of photons a few millimeters long, which can contain several millions of protons, if not more (haven't done the math cause I'm too lazy).