Light Art

I recently learned about light art. It is really interesting and cool to me. How it works is you would have  a camera and on that camera you would set the drag to a low setting I think. So what that does is instead of taking a picture in a half a second it takes a picture in like two seconds. So if there is movement it captures it. Its kinda like a video camera but its just a picture that captures a few seconds. I have never done it. But I understand how it works, and I've seen people do it. Its weird to think about though. Like if you have a laser pointer and you move that around the room really fast it will look like a solid line. Which I don't understand, but it makes sense. Maybe its because the light takes time to get back to ur eyes so it  just appears its a solid line. But I do not know. It looks cool though, and I can't explain it right now.