More info and schematic on this Roman Numeral Clock: https://www.watchprosite.com/horological-meandering/nearly-as-nifty-as-a-nixie/17.1127926.8613926/
Mark On Friday, November 21, 2025 at 2:39:23 PM UTC-6 Mac Doktor wrote: > > On Nov 21, 2025, at 2:57 PM, Tom Katt <[email protected]> wrote: > > Ah, the days when leds were still a new fangled technology…. And before > blue leds were invented and made everything so painful on the eyes lol. I > miss old red leds ;-) > > > As you age your sensitivity to short wavelengths decrease and the > wavelength of blue LEDs can vary quite a bit. There's a house nearby that > had blue LED Xmas lights before anyone else in town. They looked strangely > dim to me at the time and they haven't gotten any brighter over the last 15 > or 20 years. > > A friend of mine has a very powerful laser in the low 400s (nm). It just > barely looks violet to me. > > I collect antique Xmas lights and blackbody radiation is the only way to > go. No LEDs on my tree, just 350 hand painted clear incandescents on a 4' > tree plus 35 miniature base bubble lights. The entire inside of the tree > just glows and the bubble lights are to die for. None of the crummy > candelabra base stuff. > > > Terry Bowman, KA4HJH > "The Mac Doctor" > > https://www.astarcloseup.com > > "I’ve seen things you people wouldn’t believe. Attack ships on fire off > the shoulder of Orion. I watched c-beams glitter in the dark > near Tannhäuser Gate. > > "All those moments will be lost in time like tears in the rain."— Roy > Batty, *Blade Runner* > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/4e589412-990b-4e4a-aeba-1cb6c02625e4n%40googlegroups.com.
