Vedang Sati's Blog

I love physics and I know that there are many, who wonder its use in the real world. So if you really want to discover physics, apply it in your life and enjoy its beauty, you do not need to dwell deep into mathematics - I have decided to promote physics. So, my books "Let us discover Physics", "Gravitation", "Ideas of life and Death" and "What is this world made of?" are currently free on Amazon. You can enjoy physics at the fullest !

Heisenberg's uncertainty principle implies that the exact position and exact velocity of an electron cannot be measured simultaneously. Not only electron, microscopic particles obey this rule ( perhaps that is why, a new physics - quantum physics - was born ) Thus, there are no defined trajectories of electron. You never know where an electron is - within an atom - as Bohr had thought. Two words that are used in quantum mechanical model of atom are 'chance' and 'probability' - In fact, they are the same...

Paul Dirac never made it clear - He did not want to reveal (or hide) his take on god. In a popular interview, he was asked whether he believed in god or not and his reply was very logical : "If earth is the only planet in the universe where life has evolved - then it is just a lucky chance that we exist - In such a grand universe, it always seemed more obvious that any other planet had life too - I would then believe in God. However, if there are several other planets where life has just evolved (just started) - then I say there is no god - because then each planet with life would have the same set of conditions necessary to support life - working within the laws of the universe ."

Light does not have to travel in a straight line. In fact, when light passes from one medium to another, it may bend away from its usual path. Well, you may know about this phenomenon - It is Refraction. "Refraction is the change in direction of a wave due to a change in its transmission medium." That is a boring definition.Let us Discover Physics: Appreciating Nature