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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Add Windows and Screens to your Spring Cleaning To-Do List!
Clean windows and screens can help save money on your energy bill
Washing windows and screens is a great way to practice energy efficiency during spring cleaning.
Clean windows and screens make your home brighter by allowing more sunlight in, reducing the need for lamps and fixtures. Clean screens also allow more fresh air in the home when the windows are open to recycle indoor air. Natural light and clean air are energy savers, and they enhance overall health and productivity.
Source: energy.gov