Uploaded November 2021 | Updated September 2026, 2 weeks ago
This site was super helpful at explaining the history and math of apportionment. As always though, verify the specifics of the data yourself (but all the general points are definitely correct). maa.org/press/periodicals/convergence/apportioning-representatives-in-the-united-states-congress-introduction
You want MY data? Come get my data. dropbox.com/s/o8bmzmwcpbl04vq/SUM_census_data.xlsx?dl=0
George Washington was voiced by my friend Ben Moor. They are in The Queen's Gambit!
The Voice of Alabama is voiced by The Voice of Alabama. They are in Alabama!
Thanks to all of my Patreon supporters who mean I can spend a silly amount of time on a video like this. So much time. So much historical data. You too can help support me: patreon.com/standupmaths
CORRECTIONS
- I didn't bother showing me locking cell references in the animations. Things like "=B4/B2" should have been "=B4/$B$2" so I could drag the formula down. We took that out in the interest of clarity.
- Yes, at 13:20 I say "the divisor ceases to lose some of its strict meaning" which is the opposite of what I meant! the sentence needs but the one negative. Either of these would work: "the divisor loses some of its strict meaning" OR "the divisor ceases to have some of its strict meaning".
- Sorry, at 16:47 column D is wrong. These are different numbers using 880 but the values over in E use the correct 930. It's just a display issue and does not change the results (despite being a bit confusing!). Spotted by a few people including Thomas Klemm and AverageJon.
- People have mentioned that Theorem 2 (and the conclusion) from this 1974 paper by Balinski & Young has an Alabama-paradox-beating method. doi.org/10.1073/pnas.71.11.4602
- Let me know if you spot anything else.
Filming and editing by Alex Genn-Bash
Animations by William Marler wmad.co.uk
Voice work by Ben Moor and Destin Sandlin. Yes, it was Destin. Well done on scrolling all the way down here to check.
SUM Music by Howard Carter
Design by Simon Wright and Adam Robinson
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback
Hep Cats by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Source: incompetech.com/music/royalty-free/index.html?isrc=USUAN1500022 Artist: incompetech.com
This site was super helpful at explaining the history and math of apportionment. As always though, verify the specifics of the data yourself (but all the general points are definitely correct). maa.org/press/periodicals/convergence/apportioning-representatives-in-the-united-states-congress-introduction
You want MY data? Come get my data. dropbox.com/s/o8bmzmwcpbl04vq/SUM_census_data.xlsx?dl=0
George Washington was voiced by my friend Ben Moor. They are in The Queen's Gambit!
The Voice of Alabama is voiced by The Voice of Alabama. They are in Alabama!
Thanks to all of my Patreon supporters who mean I can spend a silly amount of time on a video like this. So much time. So much historical data. You too can help support me: patreon.com/standupmaths
CORRECTIONS
- I didn't bother showing me locking cell references in the animations. Things like "=B4/B2" should have been "=B4/$B$2" so I could drag the formula down. We took that out in the interest of clarity.
- Yes, at 13:20 I say "the divisor ceases to lose some of its strict meaning" which is the opposite of what I meant! the sentence needs but the one negative. Either of these would work: "the divisor loses some of its strict meaning" OR "the divisor ceases to have some of its strict meaning".
- Sorry, at 16:47 column D is wrong. These are different numbers using 880 but the values over in E use the correct 930. It's just a display issue and does not change the results (despite being a bit confusing!). Spotted by a few people including Thomas Klemm and AverageJon.
- People have mentioned that Theorem 2 (and the conclusion) from this 1974 paper by Balinski & Young has an Alabama-paradox-beating method. doi.org/10.1073/pnas.71.11.4602
- Let me know if you spot anything else.
Filming and editing by Alex Genn-Bash
Animations by William Marler wmad.co.uk
Voice work by Ben Moor and Destin Sandlin. Yes, it was Destin. Well done on scrolling all the way down here to check.
SUM Music by Howard Carter
Design by Simon Wright and Adam Robinson
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback
Hep Cats by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommons.org/licenses/by/4.0
Source: incompetech.com/music/royalty-free/index.html?isrc=USUAN1500022 Artist: incompetech.com








![How fast is a bullet? [featuring: pendulum calculation]
Thanks to the Cambridge Engineering Department for building the pendulum.
http://www.eng.cam.ac.uk/
Much appreciation to Maria Kettle and Cambridge Engineering Outreach for organising the day.
http://www.eng.cam.ac.uk/events-and-outreach/schools-and-community-outreach
And Hugh was there.
http://www2.eng.cam.ac.uk/~hemh1/
The Cambridge University Rifle Association were super helpful and let us take over their range for most of the day! Katherine Fleck was our expert shooter with infinite patience.
http://cura.soc.srcf.net/
If you have other suggestions for calculating the speed of a bullet: let me know!
CORRECTIONS
- At 3:17 the close-up shows the sliding box already taped to a piece of paper. I only noticed when uploading that we had used this shot from later in the day by accident. It should have been the shot of the box sliding off the pendulum platform. Our solution to fix this problem was to tape it to a piece of paper.
- A few people have asked why we didn’t use a “chronograph”. We did actually use one which detects the movement of the bullet using infrared sensors. But the .22 bullet was too small to trip them.
- People have commented that we didn’t need to use the equation for the period as we know the length of the pendulum and the value of g. But the period is really easy to measure accurately by letting the pendulum swing for ages. Length could be measured fairly accurately (guessing the centre of mass) but g would require an extra assumption.
- Let me know if you spot anything else!
Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:
Nicholas Main
Julian Metzler
Amanda Pagul
Christopher Wilson
Claire Greenhalgh
Support my channel and I can make more maths videos:
https://www.patreon.com/standupmaths
Music by Howard Carter
Filming and editing by Trunkman Productions
Sound production by Peter Doggart
Design by Simon Wright
MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/
NEW BOOKk: http://wwwh.umble-pi.com
Nerdy maths toys: http://mathsgear.co.uk/ How fast is a bullet? [featuring: pendulum calculation]](https://i.ytimg.com/vi/IoYm8lcJQ0o/mqdefault.jpg)

