can visible light be seen.... sounds childish right !!! i mean can the rays of visible light be seen??

Answer 1

Yes, and no. Yes, if you are looking directly at the source of the light such as a flashlight, fire, or a candle. In those cases, the individual photons that make up the "rays" of light strike your "photon detecting devices (eyes)" and you "see the light." However, if you look at light waves as they "pass" you, no, because no photons from the "rays" are aimed at your eyes. For instance, standing at the end of a long dark alley at night. A person on the street, but around the corner from your alley, turns on a spot light and shines it up the street, with the "beam" of light passing the entrance to your alley. You would not be able to see the actual "beam" of light. You might see dust in the air, illuminated by the beam (actually reflecting some of the light in your direction). You might see something on the street, illuminated by the searchlight beam's scattered light. You would not see the actual beam though, since you only see "light" (photons) that are picked up by your eyes.

Think of it in another way. If we could see the "side" of a light beam, the light from the Sun would make it impossible to see anything when we were outside because it falls on every square inch of the surface of the Earth and we would be standing in a "sea" of light so bright that everything else would be hidden by the "rays" of light.

Answer 2

Any biological organism is based around a delicate economy. Resources and their uses have to be kept in exact balance. Any extra expenditure will equal additional uptake. Every upside has a downside. Natural selection deems what trade-offs are acceptable. With this in mind, I can think of two possible reasons. 1. Materials. It is very difficult to get cells which can reliably capture radio waves or gamma rays. Although we know it is possible in some cases (bees see into the ultraviolet), the extra material and energy needed to maintain such a wavelength range may not have been workable. Take x-rays and gamma rays: we need lead bricks to capture them. 2. No pressure. We get along fine without needing to see into the infrared or ultraviolet spectrums. It is quite probable that there was never a strong need to see other portions of the EM spectrum, so mutations which could have led to this were never selected for. And the order is actually: radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, gamma rays <== Longer wavelength, lower frequency, less energy ==> Shorter wavelength, higher frequency, greater energy A radio wave travels at the same speed as visible light or a gamma ray. The only difference is energy.

Answer 3

The rays themselves can only be seen if they reflect off of something back toward your eye. This can be clouds, dust in the air, or water vapor. Rays in outer space cannot be seen unless they are pointed toward you directly.

Answer 4

Every single thing you see is the result of visible light waves.

Answer 5

I'm not exactly sure what you're asking, but I believe the answer is yes. The best example is when you see the sun barely shine through clouds and all the rays are coming through.

Answer 6

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Answer 7

Maybe and maybe not.