http://www.futureelectronics.com/en/Search.aspx?dsNav=Ny:True,Nea:True,N:639 - During this video, we’ll explain what is a Light Sensor as well as how to select the right chip for your application from our line-up of Light sensor products. A light sensor is an electronic device used to detect light. There are many different types of light sensors, each of which works in a slightly different way. A photocell or photo resistor is a small sensor which changes its resistance when light shines on it. It is used in many consumer products to determine the intensity of light. http://www.futureelectronics.com/en/Pages/index.aspx
