# Electric toothbrush and vision...

**URL:** <https://boards.straightdope.com/t/electric-toothbrush-and-vision/52124>\
**Category:** Factual Questions\
**Created:** [January 28, 2001, 2:04pm UTC](https://boards.straightdope.com/t/electric-toothbrush-and-vision/52124 "2001-01-28T14:04:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![papegaai](https://avatars.discourse-cdn.com/v4/letter/p/f14d63/32.png) [@papegaai](https://boards.straightdope.com/u/papegaai)\
**Post date:** [January 28, 2001, 2:04pm UTC](https://boards.straightdope.com/t/electric-toothbrush-and-vision/52124/1 "2001-01-28T14:04:43Z")

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I’d like to know why it is that when I am brushing my teeth with an electric toothbrush (that rotates, not sonic) and look at TV or a monitor, the screen appears to move and distort. Stop brushing and all appears normal. There’s probably a reasonable explanation…

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**Author:** ![Shagnasty](https://avatars.discourse-cdn.com/v4/letter/s/9dc877/32.png) [@Shagnasty](https://boards.straightdope.com/u/Shagnasty)\
**Post date:** [January 28, 2001, 2:13pm UTC](https://boards.straightdope.com/t/electric-toothbrush-and-vision/52124/2 "2001-01-28T14:13:47Z")

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Good question! Uncle Cecil’s evil nephew, The Answer Geek, tackled this extremely similar topic on another site.

[http://abcnews.go.com/sections/tech/Geek/geek000803.html](http://abcnews.go.com/sections/tech/Geek/geek000803.html)