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https://www.wolframalpha.com/input/?i=rattleback
rattleback - Wolfram|Alpha
wolframalpha
https://tywkiwdbi.blogspot.com/2017/03/rattleback-explained.html
TYWKIWDBI ("Tai-Wiki-Widbee"): "Rattleback" explained
YouTube link . Other videos here and here (QI). A rattleback is a semi-ellipsoidal top which will rotate on its axis in a preferre...
tywkiwdbitaiwikiexplained
https://pure.psu.edu/en/publications/energy-harvesting-using-the-rattleback-theoretical-analysis-and-s/
Energy harvesting using the rattleback: Theoretical analysis and simulations of spin resonance -...
energy harvesting