Brainstuff
Why do electric plugs have holes?
- Author: Vários
- Narrator: Vários
- Publisher: Podcast
- Duration: 0:02:03
- More information
Informações:
Synopsis
You might have noticed that plugs for electric appliances have two holes. There are three reasons for these apertures -- find out what they are in this podcast from HowStuffWorks.com. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.
