Dual nature of light and related questions

How light has a dual nature? A photon has zero rest mass. Explain how ? (These questions were posted by Shubham SInha  and Ritika Chatak) Answer: The dual nature of light has been established through the various theories in an attempt to find out the real nature of light. The first theory on the nature of … Continue reading Dual nature of light and related questions

A question on Quantum Entanglement

I have read a lot about quantum mechanics but have a query. using an entangled photon for this question. If you can’t measure an entangled photon without affecting it’s entanglement then how do we know it was even entangled to start with and not just always a certain “spin”, either up or down. How can [...]

Wave particle duality

Let n and m denote the number of photons emitted by a red and blue bulb respectively of equal power in a given time.Is n=m? The above question was passed over to this site from www.askphysics.com , A website dedicated to satisfy the inquisitive mind of...