did you know?

In this thread I will post some interesting science facts :-

• did you know, a fly when alighted on top of a steel bar causes the bar to bend under its weight. the magnitude of bend is extremely small(1/1000 of a centimeter).

• did you know, if a set of fine scales is arranged, so that one scale is kept dark and light is allowed to fall on another scale, the lighted scale will sink slowly. Light has "weight"; the pressure of light on earth's surface is calculated as 2 pounds per square mile.

• did you know, there are very few animals on this planet which are not eaten by something else. One of them is the firefly. The adult firefly with its glowing body has no know predator.

• did you know, every word we speak requires the use of 72 muscles in our body.

• did you know, that a flea accelerates from a standstill to 3 feet per second in less than two thousand of a second subjecting it to a force of 150G. This is roughly equivalent to the force that a driver will experience driving a truck in a brick wall at the speed of 200 miles/hour.