EEVblog #869 – Counting LED Photons!

How may photons does a LED emit at very low currents?
What is the lowest current where a LED will actually emit photons? Dave does some measurements to answer this quantum physics level stuff!

from EEVblog https://www.eevblog.com/2016/04/13/eevblog-869-counting-led-photons/

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