S spuffock Member May 22, 2005 #1 Is there a threshold current below which a led emits no light? I have been playing with some white ones and I find that I can see the light generated by 1uA. Could a photomultiplier see the light generated by 1pA?
Is there a threshold current below which a led emits no light? I have been playing with some white ones and I find that I can see the light generated by 1uA. Could a photomultiplier see the light generated by 1pA?