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If you drop two stones in a pond one after the other, then two sets of concentric circles will emanate from where they were dropped. The curve formed by their points of intersection happens to be a hyperbola, this is the same type of curve which forms the shape of light cast on a wall by a lamp.  What would the curve look like if you dropped the stones at the same time? [more] [code]

If you drop two stones in a pond one after the other, then two sets of concentric circles will emanate from where they were dropped. The curve formed by their points of intersection happens to be a hyperbola, this is the same type of curve which forms the shape of light cast on a wall by a lamp.  What would the curve look like if you dropped the stones at the same time? [more] [code]

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Matt Henderson

I post original stuff about maths, space, computational linguistics and other things that I like. This blog is meant to be accessible and interesting to people of all backgrounds. My undergrad was maths in Cambridge, and I'm now starting research in Speech and Language technology. Email me at If you're new, check out this overview of my posts. All code posted is in Mathematica.

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