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Concerns the application of the laws of physics to analyze common situations encountered in everyday life.
34
votes
4
answers
14k
views
Why does water have no color?
When a substance absorbs and reflects light, it shows the color of that absorbed and reflected light. But water is colorless. Does it absorb and reflect light. What is the reason for this?
-5
votes
3
answers
9k
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Does light actually travel in a straight line?
Sir Issac Newton said that light travels only in a straight line. But in a burning candle, as flame is in upward direction the light from it does not travels in a straight line; it spreads. What is th …