Ultraviolet light is electromagnetic waves with a wave length shorter than visible light. UV Index is to inform public about the intensity of UV radiation . [1-3 means low exposure; 4-6 means medium; 7-9 means high; and above that is extreme exposures.] However, it differs with the skin color too! People with fairer skins are more affected by UV radiation while people with darker skins gets affected slower.
Positive uses for ultraviolet light:
- Produce Vitamin D
- Suntan
- Sterilizing medical equipment
- Bees use the reflection of ultraviolet lights off of flower petals to guide pollen collecting
- check for currency authenticity
Negative uses for ultraviolet light:
- Skin Cancer
- Sun burn
Good Job:) i didn't know that bees used the reflection of ultraviolet lights off of flower petals to guide pollen collecting.
ReplyDeleteI like that fact where u say that the bees use ultraviolet light! Thanks for updating us!
ReplyDeleteGood description on introduction. However, how is it that people with fairer skin are more affected by UV radiation than darker people ? You could elaborate further.
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