Can you explain why? I really want to know, thank you.
P
Explain what?
Explain why that is the definition or explain the reason why black varnishes degrade into brown?
Why black varnishes degrade into brown is a chemical ageing process or certain varnishes, I can't say more about it.
Why the terminology, I think is because it was first used by Rolex collectors on black submariner dials exposed to humidity and hot climate, hence the word "tropical". Humidity is "tropical", whereas there's nothing "tropical" about nicotine or the other ageing processes.
The word for other aging processes is "patina".
They're just naming conventions-- but "tropical" has been abused by sellers wanting to hype up sales.
why do we call the sky "sky"? Because we do.
I agree with you. But I do think white or creamy dial can turn to yellow or "smoky" color not only because of smoking, but also tropical humidity. Why there are an exception to white/silver/creamy dial?
Again, it's not an exception-- it's just a different word. Why do we call the sky "sky" or the grass "grass"? Because those are the words being used in that way, there's no "reason"- it's just the way it is.
Until and unless the convention changes, which it might over time if enough people like you agree the meaning of the word should change.... but OF members are purists so far and pretty rigorous with the dictionary.
Lol, not about this watch - I sold it year ago, and easily without the term "tropical". The first watch of thread starter: MPWATCH, do you think he trying to sell it?