Recent content by dan_r

At the grand old age of 35 indeed I am! I'm doing two year's distance learning to get myself refreshed - my original background was in Biology, but I ended up working in law and politics strangely. On completion of that you go to university proper, but skip ahead to the second year. There's...

I'm a complete beginner! I'm starting my studies in September after a career in law and politics, so it's totally new to me. I keep coming across all these interesting things though, and I'm trying to get an idea in my head how things gel together. I assumed that if, in a hypothetical...

Dear all, I was reading about the Alcubierre drive, and although there's the more recent issue with Hawking radiation potentially frying everything within the warp field that's generated, I was wondering whether there had been any thought given to the possibility of the drive being flung parsecs...

Do they correct them though? I'm just starting out with physics so bear with me! As I understand it, redshift is permitted to be in excess of c when dealing with cosmological distance/time/velocity because it doesn't cause a violation of special relativity, given that redshift is moving into...

Ah good! My brain WAS working then! Ok, with that info, I've found this thread on search which might be of interest to people who've followed the thread: https://www.physicsforums.com/showthread.php?t=14176 It seems that you would reach a point where the body spinning around the axis...

This is a very philosophical debate indeed - is time simply a means of quantification or is it some kind of ethereal absolute? I read Jim al-Khalili's book about Quantum Physics some time back, and I'm sure it was in there that he brought up the concept of having an infinite multiverse. I...

Haha, very rich indeed! Good to see us Dan Rs get around though! I think I'm understanding where I'm going wrong with this idea now; I was getting the impression that the inertia would drive the extended item to move at a higher velocity than the pivot around which it spun, because obviously it...

Hi, sorry it is a bit unclear. It could be better described as the level of acceleration around a pivot. In my head I'm imagining it as being almost like a lever, whereby you can generate higher velocity with a much reduced input of energy? I'll draw a diagram when I get home to my PC; I'm...

Hi all, I've just been thinking about something today which I freely admit I've not got the knowledge to actually comprehend at this time (my physics studies don't start until September!) and so it might actually belong in engineering or it might just be a load of nonsense that I've gotten...

I suppose it's a bit subjective really isn't it? If we were unable to see violet, then you might well ask why indigo seems to blend in so well with red. Personally I think that any colour can blend in nicely with another as long as there's transition between the two. When it comes to...