Recent content by benk99nenm312

This makes incredible sense! Thanks so much, that really cleared things up :)

Thanks Fredrik, yeah so many terms to understand.. that's great to have them all lined up in a single post :) I see, so if covariance is symmetrical or inversely symmetrical, what would contravariance be?

Oh awesome! Lol I'm only in chapter 3 :P

In this book it shows the contravariant with upper indices and the covariant with lower indices, so that helps too thanks.

Ok I can visualize that without trouble, thanks WannabeNewton :) Yeah as far as I can see this book doesn't cover the modern definition of the one-form, though I do believe I've heard of that, maybe that'd clear things up a bit too..

Ok I think I'm starting to understand this, thanks guys. So what would be some typical examples of contravariant and covariant vectors?

Hey everyone, I am reading a Schaum's Outline on Tensor Calculus and came to something I can't seem to understand. I'm admittedly young to be reading this but so far I've understood everything except this. My question is: what is the difference between a contravariant tensor and a covariant...

Omg wowww, lol. Thank you hah.

Hey guys, I was reading up on the Klein Gordon equation and I came across an article that gave a general solution as: \psi(r,t)= e^i(kr-\omegat), under the constraint that -k^2 + \omega^2/c^2 = m^2c^2/\hbar^2, forgive my lack of latex hah. Through Euler's law this does give a solution...

The problem lies with what you call a rip. Since such a concept does not exist amongst physicists, it is open to interpretation. If there is a universal definition for a "rip in the fabric of spacetime", probably defined by a science fiction writer, then we must find it. If everyone (no I'm...

All you are really saying, once you simplify the language, is that you believe a "rip in the fabric of spacetime" to be a point in space where all energy is accelerated away, causing spacetime to stretch away from a particular point in all directions. Spacetime does not "break", it can be...

Nobody knows the correct answer to this question...

What waves?.. what? Troponin has a good point. You can debate all sorts of things, and the reason these debates keep popping up is because people keep trying to make claims without proof. Overconfidence is a bad thing in physics, I'll admit I sometimes find myself in the end needing to be...

Ok, the word fabric can be taken too literally. The fabric of spacetime is merely a descriptive way of viewing a cross section of our 4 dimensional spacetime (a plane which is viewed to curve in General Relativity, more accurately described with the Einstein Field Equations, built from Tensor...

As I said, fabric is merely a descriptive word, an adjective to describe a slice of our 4 Dimensional Spacetime. Call it what you want, but hey, nearly every theory in existence attributes properties to this cross section of Spacetime. Relativity says that spacetime is affected by mass and...