Recent content by atomicgrenade

By 'me' looking out from the centre, I was imagining my perspective were I the central point itself.

Fairly simple question I s'pose. If I've a perfect disc and I spin it about its centre, does the zero-dimensional point at its very centre actually rotate? On the one hand, if I imagine being at the centre and looking out in one direction, if the disc rotates 180°, I would've thought that I...

^^A fantastically clear and informative reply from apeiron. Thanks very much. One remaining query though: Tell me if I'm missing some glaring point here, but this seems to go against my (limited) knowledge of physics. I can understand the wavelength issue- that's fine, but what about everyday...

Well naturally, common sense tells us that travel being impossible is a ludacris notion. But where exactly is the flaw in Zeno's argument?

Sorry, perhaps "what use are Planck units" was rather crass. What if I rephrase the question "what is the particular function of Planck units?"

So what use are Planck units?

If this is in the wrong section, I apologise, and would appreciate it if a forum veteran would show me the wrongs of my ways. Homework Statement In one of Zeno's paradoxes, it is argued that travel over any finite distance is impossible, because the distance can be divided an infinite...