Recent content by bhauta

Some say that our body can 'feel' only contact forces, I want to confirm it. Suppose I am placed between two Earth's so that their gravitational forces on me are equal and opposite. Do I feel any 'pull' - as in tug of war the rope would feel if it had sensations? If Earth's are replaced by...

I haven't gone through all the posts but it might not be much irrelevant if I digress to elementary mathematics: If (-1)*(-1)=(-1) then there won't be any need for complex numbers. Then what to do with existing, useful 'complex' maths? Follow the link...

thanks nasu for the most convincing answer. Thank you all Well I looked for a textbook-writer's response. Had the author made a brief note of indefiniteness( also the decreased intensity or the presence of additional refracted ray), why would i post the question?

as per diagrams in textbooks, if incidence angle = critical angle then the ray should travel straight until it reaches the surface of the denser medium and then go tangentially to the boundary something like the following...