Recent content by darrenr

Hmm... I think I get it. In the video, he says it's because we are trying to minimise the number of 90 degree angles between the lone pairs and the bonding pairs. With axial lone pairs, he says, there are many more 90 degree angles. At first I thought, surely it is six either way? With axial...

Thanks all. I will do some Googling until I understand some of the concepts a bit better.

Forgive me - I am very naive in these matters. What is the evidence that the decreasing angular diameter, decreasing luminosity and decreasing effects of gravitation are down to the expansion of space, and not to a combination of the object moving away through space alongside an expansion of...

I can't stop thinking about this - sorry. Imagine there are two points, A and B. Person P (who happens to be a photon, and thus knows what speed he's travelling) sets off from A to go to B, and checks how long it takes to get there. Say, it takes a minute. He wanders off for a while. Maybe...

Oh. That would explain it. Thanks, then!

The universe is expanding, I am told by a friend who is well-trained in such matters, not only in its spatial dimensions, but also in its time dimension. This sort of suggests that there is now more time between the beginning of time and yesterday than there was when it was actually yesterday...