Brainstuff
How can an electric toothbrush recharge its batteries?
- Autor: Vários
- Narrador: Vários
- Editor: Podcast
- Duración: 0:01:47
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Sinopsis
An electric toothbrush gets power from its base without the help of metal contacts. Find out how this sealed system works in the following podcast from HowStuffWorks.com. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.
