How fast is a Fidget Spinner? @standupmaths

Stand-up Maths | How fast is a Fidget Spinner? @standupmaths | Uploaded June 2017 | Updated October 2024, 5 days ago.
Use some mathematics to work out how fast a Fidget Spinner spins. In fidgets/second.

Follow-on video by Steve Mould: youtu.be/G7hh42AgBlQ

Maths and science teachers: please do torment your students with this experiment. All they need is a Fidget Spinner and a phone; the two things they refuse to be without.

I used the SpectrumView app, but there are loads of spectrogram apps out there.
oxfordwaveresearch.com/products/spectrumviewapp

The audio the spectrogram recorded is here whynot.
soundcloud.com/user-719527707/fidget-spinner-recording

This is the plot on the spectrogram screen showing the max frequency.
dropbox.com/s/33r45m34h3puslw/fidget-spinner-plot.PNG?dl=0

Thanks to Hugh Hunt for his help with this video. He showed me how to measure speed with a spectrogram.
youtube.com/user/spinfun

CORRECTIONS:
None yet. Let me know if you spot anything!

Support my videos on Patreon:
patreon.com/standupmaths

Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
Maths book: http://makeanddo4D.com/
Nerdy maths toys: mathsgear.co.uk

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$Does land area assume a country is perfectly flat? You can listen to the A Problem Squared podcast here (and everywhere else). Please do! https://aproblemsquared.libsyn.com/ Huge thanks to Dr Laura Graham! Everything they did is on github: https://github.com/laurajanegraham/surface_area/blob/master/surface_area.md All about Laura: https://laurajanegraham.github.io/ Prof Alasdair Rae was also big help and sent me their slides. http://bit.ly/measurelandarea This is that video: https://www.youtube.com/watch?v=pDYkiK90WCM All about Alasdair: http://www.statsmapsnpix.com/ Thanks to Phil Chapman for sending in the question and taking the time to record themselves reading it for me. Geoscience Australia were super helpful and answered all of my ridiculous questions. https://www.ga.gov.au/scientific-topics/national-location-information/dimensions/area-of-australia-states-and-territories Check out Steve Moulds Numberphile video on fractal coast lines. https://www.youtube.com/watch?v=7dcDuVyzb8Y Thanks to Bec Hill: comedian; podcast host; and the new voice of Geoscience Australia. https://www.youtube.com/channel/UC5_iLVNOt2i0fX57v8AjMEQ http://www.bechillcomedian.com/ CORRECTIONS - At 14:02 I accidentally say a 9 instead of a 7 (the area is 247719 not 249719). The on-screen numbers are correct. Phew. - Let me know if you spot any other mistakes. Thanks to my Patreons who mean I can spend tens of days of my life on a silly video like this. Here is a random subset of those fine Patreon People: Cubey Andy B Nicholas Koceja Jordan Scales Malcolm Rowe Sean Derek Chandler Paul LeVan Kristian Joensen Patrick Stover https://www.patreon.com/standupmaths As always: thanks to Jane Street who support my channel. Theyre amazing. https://www.janestreet.com/ Filming and editing by Matt Parker Additional filming by Lucie Green A bunch of footage is from Pond5 Audio and music by Howard Carter Design by Simon Wright and Adam Robinson MATT PARKER: Stand-up Mathematician Website: http://standupmaths.com/ US book: https://www.penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker/ UK book: https://mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback$

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