This light dependent switch (dark activated switch) was constructed around the operation of a ORP12 photocell where light is the most important factor. Photocell – a type of resistor wherein the ...

They've had a good long run, 134 years, but come January most screw-in incandescent lightbulbs will have been phased out because they use too much energy. There's no need to hoard bulbs. Our tests ...

Home lighting solutions have evolved to the point where you no longer need to roll off the couch to flip a switch. These days, you just have to press a button on your phone to light up the room. If ...