The size of the fall in energy determines the energy the photon has when it is emitted, which in turns determines the colour of the light the diode emits. An emitted photon with a large amount of energy will have a shorter wavelength than light emitted with a lower amount of energy. The...
I’m not on an endless vacation. I have work to do every day (and a kitty cat to take care of – which is the reason I’m here to begin with). If I’d made time to see Kyoto as well, I’d have been berated for not also seeing the north. And if I’d done that as ...
Why, then, does pure silicon have such a high resistivity compared to copper? Silicon is an indirect band gap semiconductor for which the value of alpha s 1510 (cm(^-1)) at 700 nm. i. Explain why alpha is relatively low for this...