What is Gravity?
We all know what is Gravity – it is what keeps us down to Earth. It is the force that makes apple to fall next to the tree. But what is the definition of Gravity in physics? It’s one of … Read More
Speed Of Light – How Fast is That?
Perhaps all you have heard at least once the expression “Speed of Light”. If you are from those who know that this is something very fast but do not know how fast actually, I will say that it’s about 300000 … Read More