After some napkin math, a motorized laser mount as above will have some nasty sine wave like effects if you take pictures in between steps of a rotating 3d scanner. Be aware, that 3d scanning ...

"Our demonstration of a very counter-intuitive optical effect invites us to reconsider ... On a screen opposite the blue laser, they saw a dark line where the green laser blocked blue light ...

Right off the bat, we’ll say that this video showing a laser beam stopping in mid-air is nothing but a camera trick. But it’s the trick that’s the hack, and you’ve got to admit that it ...

"What’s really cool is if we project a laser beam as a line then make it move, we can create underwater effects inside the theater that hovers over the audience’s heads," says Bush.