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I mean colour, not spectrum. I don't expect, or at least don't count on, LEDs to reproduce a black-body spectrum. I recognise that two light sources with the s

• dr_zoidberg 10y ago
  I think he meant that 2 things having the same colour, but different spectrum, can have different effects on your vision (and body?). The example that most easily comes to my mind is a LED screen representing a yellow colour, versus a lemon under the sun. Shame he didn't elaborate, it seemed to be an interesting topic.
• Noseshine 10y ago
  Every light source produces a spectrum - even a laser, albeit only small one. Have a look at this link: http://www.soundandvision.com/content/led-vs-cfl-bulbs-color-temp-light-spectrum-and-more http://www.soundandvision.com/content/led-vs-cfl-bulbs-color... As you can see a lot of LEDs have quite a lot of blue. Which is exactly what is responsible for synchronizing your own "clock": http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831986/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831986/ > Not only does light reset the human circadian rhythm, but the same blue > light that has the strongest impact on dinoflagellates has equal power > to reset our own clocks — although most visible wavelengths can reset > the clock, the blues do the job with the greatest efficiency. Which is the whole reason f.lux became so popular.