pbuk's latest activity

Well - oh my stars & garters! I'm published! (Five maritime-themed short stories of fantastical fiction set in the deep past, present...

I think @SSequence is right that the key is the undecidability of the halting problem. There exist a list of all computable numbers, but...

Is that true in your education system? In the UK that is only likely to be true in the first year of an undergraduate course: in the...

So then children would not be able to access government sites. Or university sites. Or Wikipedia. Or PhysicsForums. Instead, they would...

There has been extensive work in the UK on this: the Department for Energy Security and Net Zero (DESNZ) published a study and commenced...

Thread is reopened provisionally so that the OP can respond to my DM in-thread. Short leash.

No, they show a lot of deformation. It is impossible to say without measurement how the volume has changed.

...which has deformed due to compression of the vapour as the ice expands.

But your qualitative description ("I put some bottles of water in the freezer and it looks like they shrank") has already been addressed...

While the images of carbonated mineral water are highly informative, note that even 'still water' can have a lot of dissolved gas (air)...

Corollary: since ice forms asymmetrically inside the bottle, it also expands asymmetrically. As noted by @Jonathan Scott, when a plastic...

The question does not imply that Holly was alive 15 years ago. It does imply that Ivy was alive 15 years ago, and so Ivy's minimum age...

An alternative, which is equivalent to the usual epsilon-delta definition is: A function ##f## is continuous at a point ##a## if for...

No, don't go there. Doesn't matter, your site is based in the EU so you need to follow (your local implementation of) EU cookie law...

Cookie law is a funny beast. Each country or region may have a different take on it. The law is based on where the user is from and not...