How many does it take to change a light bulb?
Five: Three to design a nuclear-powered light bulb that never needs changing, one to install it, and one to write the computer program that controls the wall switch.
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Five: Three to design a nuclear-powered light bulb that never needs changing, one to install it, and one to write the computer program that controls the wall switch.
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A Bright Idea for Outdoor Lighting
Choose fixtures that save energy
Look for LED products and fixtures for outdoor use, such as pathway, step and porch lights. Many include features like automatic daylight shut-off and motion sensors. You can also find solar-powered lighting for outdoor spaces.
Source: energy.gov