Pi Day 2019: calculating π with a balancing beam
HTML-код
- Опубликовано: 6 мар 2019
- wwwh.umble-pi.com
You can buy my book now!
UPDATE: We are out of beam books!
Behind the scenes video is here:
• Humble Pi by Matt Park...
Get it from Maths Gear and be guaranteed a signed first edition hard back.
mathsgear.co.uk/products/humb...
But it is also available on Amazon.
www.amazon.co.uk/Humble-Pi-Co...
For teachers (or anyone who would like some extra maths to do!) we have made an activity sheet about infinite series which give pi.
www.think-maths.co.uk/pi-sums
Celebrate Pi Day this 14 March (the date is written 3.14 in some countries; good enough for me!).
Check out the fantastic chalkdust magazine: chalkdustmagazine.com
CORRECTIONS
- I’m not worrying about the bending of the beam bringing the forces slightly closer to the turning point. Just getting in before anyone brings it up.
- People are upset I said torque instead of moment. I’m sorry.
- People are upset I said “one over a fourth” instead of “one over four”. Technically I was wrong. But am TOTALLY NOT SORRY.
- Let me know if you spot anything!
Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:
David Wagner
Bruce Patterson
Andrew Jarvis
Loren Thomas
Thijs Raymakers
Support my channel and I can make more maths videos:
/ standupmaths
The t-shirt I'm wearing is "Woven" by Ugmonk. The discount code STANDUPMATHS should get you 10% off.
shop.ugmonk.com/products/woven
Music by Howard Carter
Filming and editing by Penguin
Design by Simon Wright
MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
Maths book: wwwh.umble-pi.com
Nerdy maths toys: mathsgear.co.uk/
Dear Matt, We’re not angry we’re just disappointed, please do not cut up books, especially ones as fantastic as this ❤️
you're a week early, is this a Parker pi day?
"We're going to calculate po to
Why don't you reduce the error to exactly 0.0% by simply redefining π using your books?
The string is a ‘massless, one dimensional, Newtonian string’? ;-)
Pure maths and no engineering = bent beams :-)
It was kind of a lucky result. The first 12 terms of the series only gives pi=3.0643
It's been two years since I watched hours of you just tossing a coin? I'm getting old.
You could probably also burn the books, observe how the smoke spreads and calculate pi from that using Monte Carlo...
Seems like Pi Day came early this year
'people say "don't destroy books", but actually it's really easy!'
8:15
pi day:
The down-curve of your 6.5 book end means that the mass is closer to the pivot, and so imparts less torque. Looks like maybe 10 degrees more curve on that side, so you're only at cos(10deg) or 98.5% of the distance. If we divide 3.11791 by sqrt(0.985) we get:
9:15
My thoughts as Matt describes his plan.
"That's not a problem because we have decided to not worry about it" What a Parker solution to the problem
Yes, they released a week earlier, but 7/365=1.92% so they have actually gotten pretty close
Instead of a calculator, you should use a slide rule.
This is why you always be mine favourite ''a insane physical approach to define a theoretical mathematics which others generally approximate''