The Nobel Prize in Physics was awarded to Arthur Ashkin, Gérard Mourou and Donna Strickland this year, with one half to Ashkin and other half jointly to Mourou and Strickland. The award honours the inventions in the field of laser physics. Arthur Ashkin was awarded the Nobel Prize for his invention of optical tweezers that …
Just looking at stars in the night sky seems as if every star is equally far away. Feels like we are bound by some spherical ball with stars on the sphere. Any star seems to be as far as any other and this led the ancient Greeks to believe that all the stars were the …
Mirage is an optical phenomenon which creates an illusion of water. The most common occurrences are during hot sunny days and most of us are familiar with mirage we see on highways. We have heard popular stories of weary traveller who sees a lake at a distance, that’s just the reflection of the sky above …