Charles Link's latest activity

The above is a photo of a 4'0" snowman that I made today, New Year's Eve 2025, in Chicago. We had about a half inch of snow, but...

It's the end of the year and once again I wish to thank the mentors and admins for their stedfast commitment to the PF cause and for...

Thank you for the update Robert, and I'm very sorry for the loss to you and your family. Paul was an amazing member here, with many...

damn. this is hard to hear. @phinds was just a loved and core member for 15 years. Thank you so much for taking a bit of time to let us...

Good afternoon, This is not Paul, but rather his son Robert. I am very sad to write here that my dad passed away on Saturday...

Just an additional comment or two: What you @Orthoceras are asking seems simple in a way, but plasma physics can get very complicated...

The orange of neon, and the blue of argon/xenon, are fluorescence colors. De-excitation occurs in a sequence of smaller energy steps...

one micron=1.24 eV so that 620 nm=orange is 2.48 eV. The energies you have there are all in the UV if I'm not mistaken. I don't know...

The OP may find it of interest that as the degree of ionization in a plasma increases, basically as the current density rises, the...

This is an old thread, but I still think this is a topic that hasn't been completely resolved yet. The previous post or two did not...

First year of two of the awards I feel like we had one

I still think we cannot compete with the American habit of abbreviating everything to 3-letter words. Concatenation is far easier than...

It's sure been a wild ride this year! Between some AI missteps and breaking LaTeX for a good portion of the year (at least we got dark...

@PeroK . Stop complaining about AI - you're better by far!