You all probably already know about the Ames room illusion in which a seemingly normal-looking room makes people located by the far wall appear to have vastly different sizes.
@henryseg just posted a YouTube video providing a more in-depth look (matrix math!!!) at the mathematics behind the Ames room.
MathstodonHenry Segerman (@henryseg@mathstodon.xyz)Attached: 1 image
Why is blue bigger than red?
Video: https://youtu.be/Sbt-iFm0zTA #illusion #lego