An interesting question based on Relativity (Time dilation and the Twin Paradox)

Yes, this is similar to the twin paradox, but with a few changes: Two brothers set off from earth to make a round trip of 30 light years in total. The first brother, say Albert, has a ship that travels at 10% the speed of light so his journey will take him 300 years and, [...]

Idea on origin of Gravity – A discussion

Derek shares his idea on origin of Gravity – “if you were to suddenly put a large object in space then the space would  be pushed out to the sides (displacement) . because the object  is now in the place were space once  occupied ?? so space is just pushing  back to its original area ???? is this what gravity is??? or [...]

What is the mechanical energy of a bird on top of a moving Ship?

A bird is at rest on d top of a stick of moving ship….!! what is the mechanical energy that exists in the bird ???” – This question was posted by Fatima Answer: The mechanical energy of the bird is both Potential and Kinetic as the bird is at a height with respect to ground ...Read the full post

What are Tachyons?

What are Tachyons? This question was posted by Vimal Raj. Answer: Tachyons are hypothetical particles which always travel faster than light. The idea is that, if there is a particle which travels with a speed less than the speed of light, it will never cross the speed of light. But if there are some partricles ...Read the full post