Tag: mathematical impressions
Mathematical Impressions
March 27, 2015
Mathematical Impressions: The Golden Ratio
By George Hart
![Two hands hold a swirly shell that abides by the Golden Ratio](https://simonsfoundation.imgix.net/wp-content/uploads/2017/07/12024158/Golden-Ratio-Thumb.jpg?auto=format&q=90&fit=crop&w=105&h=105)
Mathematical Impressions
November 14, 2014
Mathematical Impressions: Curved and Straight?
By George Hart
![Hands holding the top and bottom of a hyperboloid model](https://simonsfoundation.imgix.net/wp-content/uploads/2017/07/11210539/Hyperboloids-Still.jpg?auto=format&q=90&fit=crop&w=105&h=105)
Mathematical Impressions
September 16, 2014
Mathematical Impressions: Long Sword Dancing
By George Hart
![Four popsicle sticks intertwined](https://simonsfoundation.imgix.net/wp-content/uploads/2017/07/11210358/longsword_thumb3.jpg?auto=format&q=90&fit=crop&w=105&h=105)
Mathematical Impressions
May 23, 2014
Mathematical Impressions: Spontaneous Stratification
By George Hart
![Measuring cup with pink sand inside it and a wooden spoon in the sand](https://simonsfoundation.imgix.net/wp-content/uploads/2017/07/11210151/spontaneous_stratification_thumb.jpg?auto=format&q=90&fit=crop&w=105&h=105)
Mathematical Impressions
March 20, 2014
Mathematical Impressions: The Bicycle Pulling Puzzle
By George Hart
![Illustration of wheel and pedal/pulley mechanism](https://simonsfoundation.imgix.net/wp-content/uploads/2017/07/11210030/bike_pull_thumb3.jpg?auto=format&q=90&fit=crop&w=105&h=105)
Mathematical Impressions
February 03, 2014
Mathematical Impressions: Change Ringing
By George Hart
![Digital visualization of all the permutation combinations of 1234, connected with lines](https://simonsfoundation.imgix.net/wp-content/uploads/2017/07/11205930/screenshot_384.jpg?auto=format&q=90&fit=crop&w=105&h=105)
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