User:Oaksidewalk/sandbox

Light Dependent Resistor (Simple English) Put the following into my own words:

As light falls on the semiconductor, the light photons are absorbed by the semiconductor lattice and some of their energy is transferred to the electrons. This gives some of them sufficient energy to break free from the crystal lattice so that they can then conduct electricity. This results in a lowering of the resistance of the semiconductor and hence the overall LDR resistance.

Links: http://www.electronics-radio.com/articles/electronic_components/resistors/light-dependent-resistor-ldr.php