by DGFone » November 22nd, 2011, 6:14 am
I say no:
Ghosts are semi-transparent. This means that something emits light, and something else needs to be in the air to reflect the light, and thus producing an image.
In the natural world, there is no light source capable of emitting light at a high intensity to be visible in the air. It always needs a medium. - Rainbows need that thick, moist air, so that the light is visible because of water droplets suspended in the air.
Humans created an alternative - the LASER. - Yes, it is in fact an acronym.
Very powerful lasers are visible in the air because the impurities (dust and stuff) are enough to reflect a small portion of the laser, producing the visible beam. Research is being done to use many lasers to create a true 3D image that is projected into the air, but often they still need to be aided with things like fog to produce their image.
But one thing is in common with straight beam lasers and the new development projectors: They all need a very bright source. This source cannot move through walls, and if you look at it in the wrong angel, you will go blind. I don't recall ghosts making people go blind. Nor did they have projectors at their feet.
So no, I don't see any ghosts created by lasers. If some human wanted to create a ghost, the best we can do one is a flickering image of roughly 8 FPS, most likely colored green. Ghosts don't flicker at a low frame-rate, and they are white.
Don't exist.
