Recent content by Holden Kenne

could you explain in layman's terms what stress-energy tensor is?

So, what I gather from this is that, whether an object's velocity is 10km/h or 10,000 km/s, mass doesn't change, but energy does? And inertial mass = force needed to move an object at x speed?

Well. Better hit the library.

I know he studied light and optics. I just would like to know why Newton's second law doesn't apply at speeds reaching that of light.

The reason I was reading about relativity is because I read that, at the time of the publication of Philosophae, Newton did not take account for speeds reaching that of near-c. I just want to understand why they don't.

Hi, I'm a frehshman in High school writing a paper about Isaac Newton. One of my paragraphs is about the laws of motion. I came across a tidbit of information - there are instances in which Newton's laws are not correct. One example I found was that, at speeds approaching that of light, an...