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Mathematics

500-year-old maths problem turns out to apply to coffee and clocks

A centuries-old maths problem asks what shape a circle traces out as
it rolls along a line. The answer, dubbed a "cycloid", turns out to
have applications in a variety of scientific fields

By Sarah Hart

10 May 2024

      

[SEI_203361737]

Light reflecting off the round rim creates a mathematically
significant shape in this coffee cup

Sarah Hart

The following is an extract from our Lost in Space-Time newsletter.
Each month, we hand over the keyboard to a physicist or mathematician
to tell you about fascinating ideas from their corner of the
universe. You can sign up for Lost in Space-Time for free here.

The artist Paul Klee famously described drawing as "taking a line for
a walk" - but why stop there? Mathematicians have been wondering for
five centuries what happens when...

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