Half a croissant, on a plate, with a sign in front of it saying '50c'
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Plasma Skylight

A natural extension of Simonj's Plasma Walk idea. I had this idea a long time ago and never posted it, and Simonj's post reminded me and opened the door for it.
 
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Exactly like the Plasma walk idea, but on the ceiling! Plasma screens on the cieling. Would be great for night-shift office workers. Cover the windows, and you could have sky and moving cloud images recorded from earlier in the day to simulate daylight in the office. Other neat effects could be achived for special occasions, like mock fireworks displays and airplane flybys.
21 Quest, Jun 20 2009

'Sky' skylight http://www.halfbake...27Sky_27_20skylight
My passive version [spidermother, Jun 20 2009]

Wikipedia: Plasma window https://en.wikipedi.../wiki/Plasma_window
Mentioned in my anno [notexactly, Jun 22 2019]

fake skylights https://www.coelux.com/en/products/index
[unhelpful_fool, Jun 25 2019]

[link]






       A plasma skylight ought to show images of aurorae.
spidermother, Jun 20 2009
  

       I was expecting a plasma window [link] used as a skylight.
notexactly, Jun 22 2019
  

       Perhaps baked?
unhelpful_fool, Jun 25 2019
  

       Does that CoeLux site's patents page work for anyone else? All I get on there is "contact us", not a list of patents. And they have no page describing how their technology works, AFAICS.
notexactly, Jul 01 2019
  
      
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