Tag: mathematical impressions

Mathematical Impressions: The Golden Ratio By George Hart The golden ratio is greatly hyped, partly for its beautiful mathematical properties but also for nonsensical reasons. Distinguishing between the two requires understanding that mathematics is about structures and relationships,…

Mathematical Impressions: Curved and Straight? By George Hart The elliptic hyperboloid is a beautiful quadratic surface that is “doubly ruled,” meaning that the surface, although curved, contains two straight lines through each point.

Mathematical Impressions: Long Sword Dancing By George Hart How do long sword dances produce stable patterns of interwoven segments? What are the possible variations? Explore the mathematics of this traditional art form.

Mathematical Impressions: Spontaneous Stratification By George Hart Why does a mixture of sand and colored sugar spontaneously separate when poured?

Mathematical Impressions: The Bicycle Pulling Puzzle By George Hart If you pull straight back on the lower pedal of your bicycle, will the bike move forward or backward? This classic puzzle has a surprising twist.

Mathematical Impressions: Change Ringing By George Hart Change ringing, in which a band of ringers plays long sequences of permutations on a set of peal bells, is a little-known but surprisingly rich and beautiful acoustical application of…