Part IV: How does the mirror know?

Try this PhET simulation of a plane mirror

https://phet.colorado.edu/sims/html/geometric-optics-basics/latest/geometric-optics-basics_all.html?initialScreen=2

How does the mirror know?

A viral internet question about mirrors has been making the rounds.

Using the information you’ve learned about rays and mirrors, predict how the mirror ‘knows’ you are there, even if you can’t see yourself.

@bethanyking68

I have the best husband in the world. I am legitimately curious how this works and he is so patient. Made by #SpikesStudio – 30% Coupon – Spikes30OFF

♬ original sound – InFaith Fashions💕Bethany💕🙏

Watch the video below for a clear explanation of how this works!

@seandreww

The viral “how does the mirror know” illusion explained

♬ original sound – Sean Andrew