OK, I thought I had the answer but this but it turns out I don't...
I want to calculate \frac{\partial t'}{\partial t}
So I have t' = \frac{t - \frac{vx}{c^2}}{\sqrt{1 - v^2/c^2}}
The answer is supposedly \frac{1}{\sqrt{1 - v^2/c^2}}
I don't see how this would be...the bottom line is a...
Homework Statement
Show that the electromagnetic wave equation
\frac{\partial^{2}\phi}{\partial x^{2}} +
\frac{\partial^{2}\phi}{\partial y^{2}} +
\frac{\partial^{2}\phi}{\partial z^{2}} -
\frac{1}{c^2}\frac{\partial^{2} \phi}{\partial t^2}
is invariant under a Lorentz transformation...
Hey, that's great, that cleared things up totally, and that link was full of useful detail, thanks a lot :-)
You're right about the stationary magnets too, makes much more sense!
Thanks :-)
Hi, I'm working with my granddad on a project to build a (simple!) electricity generating windmill. We're not trying to make the most efficient design possible, just a reasonably efficient design given the simple tools and materials we're using. It's mostly just a project for fun! :)
So, we...