BBC Focus Magazine

[Shadowwolf]

If you don't know something try to find out before attempting to explain how it might work, you can find out by looking. Questioning is fine, what you're doing, random speculation from lack of knowledge is just wasting time.

Everything being debatable is not the same thing as proffering inventions because you're uninformed nor an excuse for doing so. It detracts rather than adds if you're spouting stuff that is just pure nonsense because you can't be bothered to find out the basics first.

[Shadowwolf]

If that is correct then why can’t they be half a bubble?

It's a matter of the refraction of light through water droplets as seen by the observer that creates the arc which precludes any dome or bubble. You never find an end to a rainbow because moving also causes the rainbow to shift.

Now the OP.

Right, so it does not appear to be part of the spectrum as created via refraction but yet we do see a colour we call pink. It's an artifact of the brain trying to process two spectra from opposite ends of the visible spectrum, that's why we see it but when we see a refraction it's not there or at least that's what they suggest here.

[M Paul Lloyd]

I think the problem with pink must also apply to what we call cream or indeed any of the primary colours that have become thinned by the addition of white?
So given that white is technically speaking a combination of all the primary colours of the spectrum what you are actually seeing is red with an awful lot of white in it.
Which we interpret as being pink.

[Lateralman]

That was fantastic. I must admit that blog from Liz Elliot appears to have the lot sorted out. My head is spinning, left me thinking what reality is.

Anyhow, if that were the case what is unique about the original post?

[Lateralman]

No answer? Right that is it. I’m off to have a word with Dorothy and Toto.

[Shadowwolf]

Anyhow, if that were the case what is unique about the original post?

No answer because your question above makes no sense in context.