# How does that non-glare thing work on your rear view mirror?

**URL:** <https://boards.straightdope.com/t/how-does-that-non-glare-thing-work-on-your-rear-view-mirror/58085>\
**Category:** Factual Questions\
**Created:** [March 15, 2001, 1:47pm UTC](https://boards.straightdope.com/t/how-does-that-non-glare-thing-work-on-your-rear-view-mirror/58085 "2001-03-15T13:47:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![aha](https://avatars.discourse-cdn.com/v4/letter/a/eada6e/32.png) [@aha](https://boards.straightdope.com/u/aha)\
**Post date:** [March 15, 2001, 1:47pm UTC](https://boards.straightdope.com/t/how-does-that-non-glare-thing-work-on-your-rear-view-mirror/58085/1 "2001-03-15T13:47:23Z")

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You know, when you flip that tab on the bottom of your rear view mirror to get those headlights out of your eyes. I need some 'splainin on this one.

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**Author:** ![Johnny\_L.A](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/johnny_l.a/32/1084_2.png) [@Johnny\_L.A](https://boards.straightdope.com/u/Johnny_L.A)\
**Post date:** [March 15, 2001, 1:56pm UTC](https://boards.straightdope.com/t/how-does-that-non-glare-thing-work-on-your-rear-view-mirror/58085/2 "2001-03-15T13:56:12Z")

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The Word According to Cecil:  
[http://www.straightdope.com/classics/a4\_015b.html](http://www.straightdope.com/classics/a4_015b.html)