6 thoughts on “The Blue Light Special”

  1. A few years back, when blue LEDs were invented, every device started to get them. With some of the devices I’ve seen lately, the blue LED trend has jumped the shark…

  2. True blue LED’s are expensive. They are more likely LED’s with blue lenses 🙂 What’s the difference — academic I suppose (unless you are using them for their specific optical (frequency) properties…

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