now im worryed hey some random info now...
You can see a candle flame from 50 Kilometers on a clear, dark night. You can hear the tick of a watch from 6 meters in very quiet conditions. You can taste one gram of salt in 500 liters of water (.0001M). You can detect one drop of perfume diffused throughout a three-room apartment. You can detect the wing of a bee falling on your cheek from a height of one centimeter
me 2.. some more..
the speed of light is 186,000 miles per second not interesting sorry...
An itch is a stimulus affecting the nerve endings between the dermis and epidermis; scientists liken it to a form of pain. But that's neither here nor there. It's usually caused by histamine released in the epidermis. Scratching stops it, either by interfering with the nerve impulses or by temporarily damaging the nerves themselves.