Why can't we see a beam coming from a laser gun? - laser gun cakes
In the films of science fiction that uses a laser beam from a laser gun as a special effect. Why not a beam of laser guns?
Sunday, January 24, 2010
Laser Gun Cakes Why Can't We See A Beam Coming From A Laser Gun?
4 comments:
Unless, of course, fired the laser in a completely sterile environment was falling the beam of dust in the air and in turn were informed by the laser. In space, in general, there is no dust or material from which reflects the laser, so we do not see the beam.
The laser light is focused on a very small point.
be visible as lightning, or more accurately, had a burst of energy, we can generate more knowledge and technologies in the laser light to change.
What we are talking about the science-fiction
You can not draw conclusions from the fiction, it is only of interest to us and help scientists and lay people to imagine what could be.
The only time that I can do something - a light bulb, a pencil, or the moon is - where a few rays of light from the target object in the eye.
In the case of a laser beam, light beams are usually designed for us. (If they - that is, if someone shows a laser directly on your face appears - permanent light.)
If you shoot a laser in an environment where the air of smoke or steam, a portion of the laser photons, the particles collide full of smoke or steam, and reflects on the eyes. In this case, can "see" the beam.
You can see the beam of a laser gun, whether the laser light is visible, and there was enough material in the air to disperse the beam.
Some lasers are designed to work in the energy spectrum outside the range of visible light (eg infrared), they are not seen by the naked words (with the naked eye) in humans.
Even if the laser in the visible spectrum of light, or it must have taken note of the eye or by an object (such as dust reflecting in the air) and the eye to see. You can test this by flashlight night together in heaven ... do not know on the light when turned the dust floating in front of the beam.
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