Why is exposure to UV radiation dangerous whereas light does not harm us?

Answer 1

Very strong light can harm us.

For example, if you are on a snowy mountain, you can get snow blindness. Prolonged exposure to the sun without adequate water will cause dehydration, and of course the UV damage too.

UV light is higher frequency (shorter wavelenth), carries more energy, burns more. X rays are even higher frequency, and can also burn.

Answer 2

Sun light is dangerous for us but normally the UV levels are low and not dangerous. However high light exposure can result in skin damage. Sun lamps produce very high levels of UV and this is why exposure to sun lamps is very dangerous.

Answer 3

Lightbulbs as we have as standard in our homes dont emit as much if any uv radiation, the uv rays from a tanning bed is more intense that what we recieve on earth from the sun. Which is why it is more dangerous.

Answer 4

The energy of UV radiation is much greater than the energy of visible light. UV radiation has sufficient energy to move electrons around in compounds and to break chemical bonds.

Answer 5

UV wavelength can penetrate the skin cells and further
this causes disruption to the genertaive processes and can cause abnormal growth to occur which is a tumour

Answer 6

The ultraviolet rays have a very high freqency, much higher than light. If you look on the electromagnetic spectrum, you should see. Since the frequencey is higher, it burns. Just like when you rub wood on another piece of wood real quick, the two pieces tend to heat up until a fire is started.

Answer 7

the frequency of UV light is high enough to cause damage to the skin