1 min listen
Why do the plugs on some appliances have two prongs and others have three?
FromBrainStuff
ratings:
Length:
3 minutes
Released:
May 20, 2015
Format:
Podcast episode
Description
When you look at a normal 120-volt outlet in the United States, there are two vertical slots and then a round hole centered below. Take a look at this HowStuffWorks article to learn why appliance cords are shaped this way. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers
Released:
May 20, 2015
Format:
Podcast episode
Titles in the series (100)
How Fountains in Rome Work: Built before the invention of electric pumps, fountains in Rome were powered through an ingenious system of gravity, cisterns, and aqueducts. Learn more about fountains in Rome in this HowStuffWorks podcast. by BrainStuff