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   clacke (clacke@libranet.de)'s status on Wednesday, 26-Jun-2024 09:10:13 JST clacke

   I have probably said this before, but I can't get over the idea that someone could make a material that has completely different colors if you shine RGB light on it or if you shine true black-body white light on it.

   If somebody made this, where do I put my money? I want a shirt that is red outdoors and green indoors!

   • Embed this notice
     clacke (clacke@libranet.de)'s status on Wednesday, 26-Jun-2024 09:10:55 JST clacke

     in reply to

     • Chris Murphy
     @chris If they aren't RGB, they're still made of spikes. Fluorescent lights too.
   • Embed this notice
     Chris Murphy (chris@mastodon.mit.edu)'s status on Wednesday, 26-Jun-2024 09:10:56 JST Chris Murphy

     in reply to

     @clacke wouldn’t you need RGB lights indoors then? Most LED lighting systems aren’t.

     clacke likes this.
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     Chris Murphy (chris@mastodon.mit.edu)'s status on Wednesday, 26-Jun-2024 09:10:59 JST Chris Murphy

     in reply to

     @clacke (that said it’d be really cool)

     clacke likes this.
   • Embed this notice
     clacke (clacke@libranet.de)'s status on Wednesday, 26-Jun-2024 09:11:08 JST clacke

     in reply to

     • Chris Murphy
     @chris LED lights and fluorescent lights do not emit a nice black-body gauss-shaped spectrum, they emit all their energy on a few narrow lines in the spectrum.
     RE: libranet.de/objects/0b6b25a8-1…
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     Chris Murphy (chris@mastodon.mit.edu)'s status on Wednesday, 26-Jun-2024 09:11:09 JST Chris Murphy

     in reply to

     @clacke think I missed the original reference. Spikes?

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     Chris Murphy (chris@mastodon.mit.edu)'s status on Wednesday, 26-Jun-2024 09:11:22 JST Chris Murphy

     in reply to

     @clacke Got it. Wonder what “white” LEDs look like. They’re basically blue LEDs with a fluorescent coating that gets excited and emits white light. Likely a lot like fluorescent lights I’d think.

   • Embed this notice
     clacke (clacke@libranet.de)'s status on Wednesday, 26-Jun-2024 09:11:22 JST clacke

     in reply to

     • Chris Murphy
     @chris Yes. I assumed they're RGB as we already have those colors developed for LED, and also RGB should be the most energy-efficient, but you may be right that made-for-white LEDs use some other coatings that result in different spikes.
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     smolwaffle (smolwaffle@union.place)'s status on Wednesday, 26-Jun-2024 13:20:24 JST smolwaffle

     in reply to

     • Chris Murphy

     @clacke
     They've gotten super complex! Still spiky, though. But better now, at least if you buy the ones made for e.g. video use. I've been eyeing some from Wavelength for my home but haven't wanted to adjust to not having color temp tuning like I get with Hue bulbs.
     @chris

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