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   Rich Felker (dalias@hachyderm.io)'s status on Saturday, 26-Jul-2025 06:48:05 JST Rich Felker

   Unpopular but right opinion: the only legal light type for automotive headlights should be sodium vapor lights.

   • Mr. Bill repeated this.
   • Embed this notice
     Rich Felker (dalias@hachyderm.io)'s status on Saturday, 26-Jul-2025 07:05:48 JST Rich Felker

     in reply to

     Unlike blue LEDs, they won't blind oncoming traffic or folks in front of you thru reflection in mirrors, and they give vastly superior object visibility/sharpness due to monochromatic light.

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     Rich Felker (dalias@hachyderm.io)'s status on Saturday, 26-Jul-2025 07:30:50 JST Rich Felker

     in reply to

     • M Schommer

     @musevg 589 nm, a sort of yellowish orange. But being monochromatic, if they're illuminating stuff in the dark you don't even really see color under them except possibly as a result of fluorescence or constructive interference.

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     M Schommer (musevg@23.social)'s status on Saturday, 26-Jul-2025 07:30:51 JST M Schommer

     in reply to

     @dalias
     They're yellow or orange, right?

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     Rich Felker (dalias@hachyderm.io)'s status on Saturday, 26-Jul-2025 07:31:38 JST Rich Felker

     in reply to

     • Bill, organizer of stuff

     @wcbdata Only if we can also use R600a refrigerant in the AC. 🙃

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     Bill, organizer of stuff (wcbdata@vis.social)'s status on Saturday, 26-Jul-2025 07:31:39 JST Bill, organizer of stuff

     in reply to

     @dalias I say we go back to gasoline headlights. Add more moral hazard to head-on collisions!

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     Howard Chu @ Symas (hyc@mastodon.social)'s status on Saturday, 26-Jul-2025 09:59:34 JST Howard Chu @ Symas

     in reply to

     @dalias 3000K LEDs are also monochromatic, and make excellent fog lights

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     Rich Felker (dalias@hachyderm.io)'s status on Saturday, 26-Jul-2025 09:59:34 JST Rich Felker

     in reply to

     • Howard Chu @ Symas

     @hyc Do you have more info? All the white LEDs I'm aware of are actually the hideous blue ones with phosphors to produce lower frequency components.

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     Rich Felker (dalias@hachyderm.io)'s status on Saturday, 26-Jul-2025 10:08:55 JST Rich Felker

     in reply to

     • Howard Chu @ Symas

     @hyc There are 590 nm amber "turtle" LEDs that are monochromatic but those are not 3000K or "white" by any means. I can't find anything sold as a color temperature that's monochromatic - the whole idea of CCT is simulating a black body curve, no?