Last year, the United States implemented new energy-efficiency standards for light bulbs, which, in effect, banned energy-wasting incandescents. What are the new energy-efficiency standards for ...

LED light bulbs are bright, energy-efficient and can be equipped with extra features, unlike regular bulbs. Whether you're looking for maximum brightness in darker rooms or you want a light source ...

Trump signed a flurry of executive actions on everything from expanding oil and gas to rolling back environmental protections ...

efficiency = 0.1 This means that 0.1 (or 10 %) of the electrical energy supplied is transferred as light energy. The light bulb is not very efficient since most of the energy supplied is not ...

Fluorescent lights, the staple of school gyms and grocery stores, aren't exactly known for their appeal. The long, skinny tubes have cheaply illuminated communal spaces and retail establishments ...