is the eclipse of the sun is bad for humans
@The_Red_Death (273)
Indonesia
May 16, 2012 12:03am CST
hi I just heard a rumor that when we see a solar eclipse, it can blind our eyes. is this true?
what the effects of solar eclipse for humans?
2 responses
@JonGilbert (111)
• Philippines
16 May 12
its just a rumor? if you think through it scientifically, there is no relationship between the sun, the moon and humans. but in this case, logically speaking, looking to the sun for a long period of time can damage our eyes, that's why we use glasses to protect it, if you have none then dont look at the eclipse for a long period of time, coz definitely too much light that comes through our eyes can make us blind. it is a fact.
@The_Red_Death (273)
• Indonesia
16 May 12
what you make is make any sense, but did you now that sun have ultra violet ray that make skin cancer???
@owlwings (43910)
• Cambridge, England
16 May 12
A solar eclipse is only 'total' for quite a brief time. Even then, the corona is really too bright to view with the naked eye.
The sun's rays contain ultra violet which our eyes cannot see but which is very harmful to them when we look directly at the sun or even part of it (when watching an eclipse). They also contain infrared (heat) and when an image of the sun is focussed by a lens (even by such a small one as in the eye) it can burn, as you can easily prove by focussing the image of the sun on your hand with a small pocket lens.
It isn't the solar eclipse itself, of course, which is damaging. It is the fact that we want to observe it and therefore it encourages us to look directly at the sun which is something which we do not normally do for more than a fraction of a second (except at dawn or sunset, perhaps).
In general, you should never look directly at the sun, either with the naked eye or through a telescope or binoculars. It is not difficult to set up a telescope to project an image onto a piece of white card and, if you have a suitable south facing room, it is even possible to cover the window and make a small hole in the blind which will project an image onto the opposite wall or a suitable sheet of paper just as in a pinhole camera.
If you MUST, view a solar eclipse directly, use a properly made darkened glass filter which not only reduces the light and heat but also blocks the ultraviolet rays. Using a piece of glass smoked by holding it over a candle or a piece of blackened photographic negative is dangerous because neither protect us properly against the ultraviolet.