The boiling point of Tungsten is 10,030 degrees Fahrenheit. How was this determined and proved? And more generally how are the boiling points of metals determined and proved?
Is it really so simple as "heat it up as high as you can and see if (and at what temperature) it evaporates"?
I feel like there is a more sophisticated process, but I can't really guess at what that might be, especially if the boiling point was determined years and years (100+?) ago.
The Internet is really good at telling me the boiling point of a lot of (or all, I haven't exhaustively checked) elements and alloys, unfortunately it seems it's not very good at telling me how these seemingly arbitrary temperatures were determined.