Mithrandir24601‭

That sounds like something I'd say, so I'll explain this from my point of view, in particular regarding 'relativistic mass'. An 'outdated' theory or piece of terminology isn't typically mathematic...

posted 1y ago by Mithrandir24601‭

Electrical Engineering has a Papers category, for writing short articles of original work, which I for one think is a great idea. Similar to such a category would be a 'paper review' category, whe...

1 answer  ·  posted 2y ago by Mithrandir24601‭  ·  last activity 2y ago by Technically Natural‭

We don't need to, it just makes life easier (at least some of the time) As $\mathbf{k}$ is a 3D vector and $x$ a 4D vector, the answer doesn't appear quite as simple as 'Fourier Transforming makes...

posted 2y ago by Mithrandir24601‭

Homework and exercises questions are generally allowed (currently anyway) under the Problems category, although there is the requirement that you need to 'show your working/attempted solution'. I d...

posted 2y ago by Mithrandir24601‭

I'm assuming that what's happening is that, for $t<t_0$, there's no gravitational field, then it's mysteriously instantaneously turned on at $t=t_0$. We can perform a Taylor expansion of $x$ ar...

posted 2y ago by Mithrandir24601‭

From my perspective, I can only agree that rudeness isn't exactly ideal. In general, if someone's being needlessly rude or aggressive etc., editing/suggesting an edit that improves the post is a g...

posted 2y ago by Mithrandir24601‭

The typical 'most simple' derivation of the gravitational wave equation (GWE) starts by a perturbation of the 'background metric' $\bar{g}$ to get $g_{\mu\nu} = \bar{g}_{\mu\nu} + h_{\mu\nu}$, wher...

posted 4mo ago by Mithrandir24601‭