21 B
Mathematics Math21b Spring 2015
Linear Algebra and Differential Equations
Exhibit: Mirror riddle
Course Head: Oliver Knill
Office: SciCtr 432

A mirror riddle

In this course we have also looked at linear transformations. Important classes were rotations, reflections, projections, dilations and shears. Why does a mirror flip vertically differently than horizontally. If we look ourselves in the mirror, its not that our head is pointing down. But our left and right hands change side. Isn't it strange. The "physics girl" solves the puzzle:

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Math21b Harvard College/GSAS: 1771, Exam group 3| Oliver Knill | Spring 2015 | Department of Mathematics | Faculty of Art and Sciences | Harvard University, [Canvas], [ISites]. Bookmark| Twitter