Math + Bathrooms

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A quick post while on vacation. Look what I found in a mens room in Frankfurt’s airport–a beautiful sequence of double parabolas. Math is everywhere!

2 comments

  1. Nice picture! The only problem is that these would be hyperbolas. You can see that they are hyperbola because of their asymptotes. The light exiting the lamps forms a cone, so you get all the conic sections depending on how it hits the wall.

    The wikipedia page http://en.wikipedia.org/wiki/Hyperbola has a similar picture of a downlight.

  2. Simon, thanks for the correction! Don’t tell my students :)

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