Recent content by fando1234

Sure... here's one article: https://www.forbes.com/sites/chadorzel/2016/11/21/the-physics-that-got-left-out-of-arrival/ also alluded to in this video

I suppose what I mean is: is this established physics, and does it call into question causality? Or is this pure philosophy. Lagrangian mechanics and Fermats principle of least action are both physics concepts so I think this is still within the topic of general physics.

I have been reading some fairly mind bending stuff about the principle or least time (and those of least action) raising questions about causality and free will. Can anyone explain this to me? Is this total 'woo woo' psuedo science, or are these philosophical questions widely accepted? Thanks...

I know that 'the sky is blue because higher frequency blue wavelengths are scattered more than red'. What has always confused me is that when I imagine this, I imagine the blue wavelengths bouncing around between atoms in the atomosphete. Whilst red light interacts less, so travels through...

Thanks! Glad I wasn't totally of the mark. Yup, that's the part that wasn't making sense to me re displacing equal volume of water. 75 cm to go up 1 cm for the elephant makes a lot of sense though Thanks for your help :)

Hey guys, I'm a super amateur at physics, but I occasionally like to calculate random problems that pop into my head. Today I was thinking about pascal and hydraulics, and wondered if I could devise a (hypothetical) hydraulic system that would allow my weight to lift an elephant. I want to...

Hmm... That wasn't a very nice introduction. Welcome Henry! Can I recommend 'Road to Reality' by Roger Penrose as one you should definitely read.

Thanks guys! Really interesting stuff there. Sounds like there's a few things I need to read up on to really get a clear idea, but thanks for pointing me in the right direction. I must admit, I think I'm thinking of the problem in a more philosophical/pure maths kind of a way. I can certainly...

Hi all, I should start by saying I'm an amateur at mathematics so please excuse me if the question seems a bit daft. But I'm just reading a book about chaos and complexity theory (John Gribbin: Simply Complexity) and it brought up a problem that I've certainly heard of before; the 'three body...

Ah right. Cheers, that makes a lot of sense. The questions been annoying me all day. I knew something had to be wrong with it, i just couldn't figure out what.

Was just wondering (and I think this links on to what 'matrix' was saying). What happens if you were to hypothetically have a rod, which is so long that each end of it is separated by say, the distance it would take light to travel in an hour. Now if you had two people on either end of the rod...