A Limerick A Day


Some 95% of what is produced from backlit devices is heat and only 5% is light

I think that it’s time that you knew
Of the danger of light when it’s blue
Can it really keep
You from getting your sleep?
It might, if these rumours are true

John Moynes

Pic: Getty

1 thought on “A Limerick A Day

  1. edalicious

    I think you’ve got your picture caption almost exactly backwards there. Traditional incandescent bulbs are 5% light, 95% heat, not modern LED backlit devices. We use LEDs because they’re much more efficient, only giving off a fraction of the waste heat.

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