What is the proper definition of light?
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Does water drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?
Explain why are metals able to conduct current so well?
Similar charges repel while dissimilar ones attract each other. How does two electrons attract each other during the formation of bond or why don't the protons in the nucleus repel?
Explain the Elasticity and Surface Tension ?
Explain the cause of brownian motion?
Explain the Effect of Temperature on Vapour Pressure ?
How can you estimate the height of a bridge by dropping a stone from it ?
Why is a man hit harder, when he falls on a paccafloor than when he falls on sand from the same height ?
Why is the temperature of the body regulated by the skin ?
Why does a thick glass tumbler break, when ice is put in it ?
Explain radio telescopes?
What is astrophysics?