When I was a kid growing up in Los Angeles, I never saw a ceiling fan in my friends’ homes. We called them “swamp coolers,” and they appeared as props in movies that were set in the deep South or in Casablanca.

While I never saw a real one as a kid, ceiling fans date back to the late 1800’s, when they were originally powered by water. In 1882, Philip Diehl, the German-American inventor of the motor for Singer sewing machines, adapted his sewing machine motor for the ceiling fan. Electric ceiling fans grew in popularity and were quite commonplace in both America and abroad by the 1920’s. Movies from the 20’s often feature them in restaurants and hotel lobbies.

Between the 1930’s and 1950’s in the U.S., however, the fans went out of vogue. Thus, my lack of experience with them as a child (which dates me as a Baby Boomer!) However, with the oil shortages of the 1970s, we started to wake up to the cost of electricity, and the fans experienced a revival. Since the 1970’s their popularity has gone up and down, but has been in uptrend since about 2000, when energy conservation again became a priority. If you would like to save energy and money, check out how ceiling fans can save energy and money in both summer and winter.

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The term “light box” can mean a few different things, but from a lighting perspective it typically refers to a backlit display panel. Light boxes are most commonly used for advertisements or other commercial displays. You’ve probably seen them in trade show booths, restaurants, airports, nightclubs, offices, hotels, museum exhibits, and retail shops. That’s right, light boxes are everywhere.

One of the most common uses for light boxes is the commercial advertisement. You see these in large spaces like terminals or outdoors at bus stops. They capture the attention of passers-by and create lasting impressions. The light box pictured below is one of the biggest I’ve ever seen.

One of the most obvious places you’ll see light boxes are along the walls inside and outside of movie theaters. Sometimes lines of light boxes stretch incredible distances, advertising all the movies being shown in large theaters.

In fact, light boxes can be a fun addition to any home and can be used for as many purposes as you can imagine. Sure, you could illuminate a movie poster of your daughter’s favorite movie. But you could also make a custom sign saying whatever you want. I really like the light box below, created at home for home.

While incandescent light bulbs are popular, they’re quite dangerous. Incandescent bulbs have high-temperature gasses inside, and these gasses can react dangerously with external air. If your incandescent bulbs are in a cold room, they might create a combustion nightmare. Keep them away from drapes, beds and other upholstery items.

Wall outlets installed near sinks, faucets and bathtubs can propose dangers. Make sure your outlets are installed away from any water sources, as they can create electrical hazards. If need be, your technician can reinstall them in a different location. Pay close attention to any outlets in your home’s bathrooms and kitchen.

Chewed, frayed or plain old electrical wiring can create a fire hazard. While most worn out wiring will be exposed, some lengths may be hidden within your walls. Keep your pets away from exposed cords, and reduce the chance of fire before it’s too late. Additionally, contact a professional for an annual wiring checkup.

Commonly, homeowners max out their power strips. If you have a lot of electronics and appliances, you might be overloading your power strip’s electrical availability. If this happens, it’ll spark—creating a fire hazard. Even if you need to plug in your appliances, you can remove any flammable materials away from your power strip, reducing any dangers while maintaining household functionality.