How to find the length of a spherical spiral

13 May 2015


How do we find the length of a spherical spiral, with equidistant spirals? Here’s the solution to this interesting reader’s question.

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The Information Paradox

28 April 2015

The Information Paradox
The Information Paradox is an interesting challenge to the accepted notions of how life on Earth came to be. There’s some mathematics involved, too!

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Hyperbolic and exponential discounting

8 April 2015

Hyperbolic and exponential discounting graph
There’s some interesting mathematics behind hyperbolic discounting, a behavioral finance concept. Here’s how it compares to exponential discounting.

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Euler’s Method and Runge-Kutta RK4

9 March 2015

Spring interactive applet using Runge-Kutter RK4
An updated spring applet uses Runge-Kutta Order 4 Method for solving a differential equation numerically.

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GeoGebra math software - a review

19 February 2015

GeoGebra is a versatile math graphing tool
GeoGebra impresses with its versatility, ease of use and power, and now has 3D graphs. It’s a great exploratory tool for math students and instructors.

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Friday Math movie: 10 Equations That Changed The World

30 January 2015

10 world-changing equations
Here’s a 3-minute summary of 10 mathematical equations that “changed the world”.

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Math teacher’s solar vision

10 December 2014

Solar powered steam engine, 1878
There were solar powered engines long before oil-based ones. Here’s a story about French mathematics teacher Augustin Mouchot, who invented one.

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Comparison of math Web publishing options

1 December 2014

Comparison of MathJax, ASCIIMathML, KaTeX and other math publishing solutions
Publishing math on the Web can be a challenge. Here’s a comparison of MathJax, ASCIIMathML, KaTeX and other math publishing solutions.

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GeoGebra now with 3D graphs

28 November 2014

3D graph using GeoGebra
GeoGebra’s latest version offers 3D graphs and output that can be viewed on tablet devices. Here’s a quick overview.

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Math in cross-wind landing vectors applet

27 November 2014

Here's some math behind the cross wind landing app in the vectors chapter
Here we look at some of the math behind the cross wind landing applet in the section on adding 2D vectors.

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