Wednesday – I never knew!

This interested me today – Remote controls use beams of infrared light to transmit their signals…

Our eyes can’t see it but our digital cameras or the cameras on our phones can. The hawk-eyed amongst you might be able to spot my living room floor in this clip!

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One Response to “Wednesday – I never knew!”

  1. Ed T Says:

    Could use a rug, but still, interesting little thing to know

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