Posts Tagged ‘fluid dynamics’

Ketchup

January 17, 2019

Why is ketchup so hard to pour? George Zaidan explains. Animation by TED-Ed.

Vaguely related:

“How Was Ketchup Invented?” Jasmine Wiggins, National Geographic

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Short link: https://wp.me/p6sb6-qyW

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Aerodynamics of Jump Rope

November 6, 2011

Aerodynamics of Jump Rope

Ever watch someone jumping rope really fast? you probably noticed that the top of the arc of moving rope bends away from the direction the rope is moving in. So did two scientists. After using high-speed video, a rope-skipping robot, and computer modeling of jump rope fluid dynamics, they have suggestions for building a better jump rope:  lightweight, short and smooth, with a small diameter.

“The aerodynamics of jumping rope,” Jeffrey M. Aristoff and Howard A. Stone, Proceedings of the Royal Society A

Dave Mosher’s plain-language write-up has an added bonus: a video of Professor Jiang Li jumping rope at Princeton.

“Solved: The Aerodynamics of Super-Fast Jump Ropes,” Dave Mosher, Wired

Short link: http://wp.me/p6sb6-bu2

Comments are welcome if they are on-topic, substantive, concise, and not boring or obscene. Comments may be edited for clarity and length.

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