Recent content by DaveC426913

So, at the outset of films, we started off with 2 or 3% in colour*, and then we just sort of gave up on them? * granted, if a total of, say, 50 films were produced in 1911, and only a single one of them were in colour, that's still 2%... The graph of absolute number of films produced...

We have all been trying to tell you how you can learn more, but you are rejecting everything we try to teach you. 🤔

If you are unwilling or unable or express your ideas here in the language of physics (math), what makes you think you understand it well enough to have an informed opinion on it? Don't you think you should understand it first?

I've only owned a dog for a few years (and it wasn't by choice) but even I have learned that 'training the dog' really means 'training the human'. It's a lot more work for the human than it is for the dog. Consistency, reinforcement of expectations, clear directions, etc.

This smacks of paranoia. You are being lazy. If you want to be good at something, put in the work. Everyone else did. We all started off in the same place. Some of us put in the work.

No. You learned just enough about science in school to see for yourself if you are interested in pursuing it. What you learned was built on a lack of the necessary maths (which you will learn later). If you decide you are interested in it, you will have to put on your big boy pants and start...

What you wrote is not a fact; it is an opinion. You can tell it's an opinion in the first few words: You say "may well be" because you are guessing. It is a guess - about how scientists (who know how to science) think - by someone who is not a scientist (and does not know how to science).

Not all species need to adapt in order to pass on their genes. The world goes through periods of great change, but it also has periods of great stability. Many creatures have successfully passed on their genes while going through very little adapation over millions or even tens of millions of...

Which is why we use math. Math is not ambiguous. And why we don't concern ourselves with the semantics of words. Words are ambiguous. You have that entirely backwards. I would point out that you - who are not a physicist, and do not know physics - are spending a lot of time and effort telling...

Well, now I'm confused. Bosons do not obey PEP. He4 is bosonic. Therefore He4 does not obey PEP. Checks out. I guess not obeying PEP does not automatically mean a particle does not take up space.

While not definitive, one might make a good start by grouping all things into either fermions or bosons. Fermions obey the Pauli Exclusion Principle - they take up space - as matter does. It is possible to fill. a box with fermions until no more can be added. Bosons do not obey PEP - they do...

This is just an issue of semantics. If the context of a given discussion provides ambiguity in what, exactly one means by 'universe', then one is obliged to provide further context, to abolish the ambiguity. Most serious cosmologists likely don't put much stock in generic words, preferring...

Gravity, AKA spacetime curvature, is a thing in the universe, but it is not - itself - matter. But the bigger, easier answer is - as others have pointed out - electromagnetic radiation.

The term is descriptive, not prescriptive. i.e. just because we define something one way at some time doesn't mean nature is obliged to conform to our definition. If such a time comes that we think there amy be multiverses, and current definition of 'universe' will become inadequate, and we...

Are nuerons a requirement for ijntelligence? Does this apply to, say, alien life? It's largely a fanciful, philosophical exercise but there's a nugget of validity there. How do you determine whether, say, an aline entity is meeting those criteria? Would you even recognize it? I thought it...