Posted by buickanddeere on March 26, 2009 at 11:41:46 from (216.183.136.2):
In Reply to: electrical ?? posted by teddy52food on March 26, 2009 at 11:20:09:
Light, sound and electricity each have a variance in speed. Depending on the medium the light, sound or electricity is traveling through. The speed of light is quoted in the fine print as traveling through a vacuum. Push light through oil or water and the speed drops dramatically. That's why the light traveling through the thicker parts of your eyeglasses. Takes long to travel and bends. Compared to the light traveling through the thinner part of the lenses. Same principal applies why the oar used to paddle your boat appears to "bend" where it enters the water. Your question is similar to asking why the bullet travels faster out the barrel. Compared to how fast the firing pin was traveling when it hit the primer. All these basics are covered in highschool math, physics and science classes.
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