Archive for the ‘Travel & Culture’ Category

Arc length of a spiral around a paraboloid

paraboloid spiral
What is the length of a spiral around a paraboloid? This is an interesting application of integral calculus, involving an environmentally friendly cooker design.

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Friday math movie: Four Cable Drawing Machine

Sand art
This reminds me of Spirograph images that brought art and geometry together, and always had an element of mystery to them.

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Friday math movie: Fractals and African designs

African fractal designsThis is an interesting story about how Africans used fractal ideas for their designs.

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Friday math movie: Fermat’s Last Theorem

Fermat's Last Theorem
Here’s a great story involving an intriguing proof that spans over 350 years.

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Friday math movie: How does math guide our ships at sea?

How math guides ships at seaHere’s an important use of mathematics in the real world – navigation at sea. We learn about dead reckoning, sextants, clocks and new mathematics.

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Math of air pollution

Haze covers SingaporeHow do we compare pollution caused by different substances and give meaningful health advisories? Singapore’s current haze season gives an example.

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Jacob’s Staff

Jacob's Staff
Scientists used Jacob’s Staff during the Renaissance to find heights and distances, using trigonometry. It was a forerunner to the sextant.

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An engineer’s view of Santa Claus

Santa's Christmas Eve physics
Is Santa’s frantic dash around the world each Christmas Eve, even possible?

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Friday math movie: The mathematics of history

Math of history
What’s the connection between verbs, math and hip hop?

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Online math education for Ajab, Gujarat

Ajab map
Students in Ajab village, India, enjoying a math lesson via Web conference from the US.

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