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Thank you, Bonnie Bees, for making this video possible.

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The Simple Secret of Runway Digits

- Thank you, Bonnie Bees, for making this video possible: https://www.patreon.com/cgpgrey - Discuss this video: https://www.reddit.com/r/cgpgrey ## Related Videos + How to be a Pirate: https://www.youtube.com/watch?v=3YFeE1eDlD0 + Social Security Numbers: https://www.youtube.com/watch?v=Erp8IAUouus + Metric Paper: https://www.youtube.com/watch?v=pUF5esTscZI ## Special Thanks + Mylos Besseling: www.youtube.com/c/mylosairplanefan + Dr. Charlie Freeman: Department Chair and Distinguished Teaching Professor at SUNY Geneseo + Doug Moss: Owner of AeroPacific Consulting + John H. Mott: Advanced Aviation Analytics Institute for Research at Purdue University + Office of the Secretary General: International Civil Aviation Organization + Derek Muller: https://www.youtube.com/veritasium ## Bonnie Bees Bobby, Bob Kunz, Andrew Bereza, Rebecca Wortham, Nevin Spoljaric, Donal Botkin, BN-12, Marco Arment, George Lin, Richard Jenkins, Phil Gardner, Martin, Steven Grimm, David Tyler, iulus, Xueqi, Colin Millions, Oliver Steele, Andrea Di Biagio, Henry Ng, Jason Lewandowski, Alex Simonides, سليمان العقل, Tim Stumbaugh, rictic, Nicholas Welna, Meekay, David White, Derek Argueta, shannon cherng, Anthony Paolilli, Emmett Jayhart, Katie Scheper, Andrew, Jeromy Johnson, Michael Ritter, Pluto, C C, Bogdan Toma, Brian Tillman, Chad Bramwell, jill hoffman, Nicolas Dedual, Derek Bonner, Mikko, Orbit_Junkie, Tómas Árni Jónasson, Dennis Dimka, Rick Edwards, Daniel Kwak, Bear, chrysilis, Drago175, Emil, Esteban Santana Santana, Freddi Hørlyck, John Rogers, Peter Lomax, Rhys Parry, Veronica Peshterianu, John Lee, Maxime Zielony, Elizabeth Keathley, Birdstryke, Darn ## Music & Sound + Kevin MacLeod Track Name: Fig Leaf Times Two Kevin MacLeod on YouTube: youtu.be/UcOXTd9Ix7g Music from: incompetech.com + David Rees: http://www.davidreesmusic.com + duckduckpony: https://freesound.org/people/duckduckpony/ ## Kurzgesagt Posters - https://shop-eu.kurzgesagt.org/collections/posters/products/black-holes-infographic-poster - https://shop-eu.kurzgesagt.org/collections/posters/products/periodic-table-poster

Comments

Anonymous

Great video. I’m really hoping for a director’s commentary on this one!

Anonymous

I like how physics snuck in with the electromagnetism explaination

Anonymous

Absolutely delightful. As a physicist :) it's always fun to see how the esoterica of the field interact with 'monkey level' problems. Really hoping we get some indifferent universe/physics wallpapers.

Anonymous

YouTube has a bonus video about the auroras, but only available to YouTube subscribers. Is that video also on Patreon somewhere? I don't see it.

Lukas Armstrong

It seems Grey uploaded "The Aurora: Deleted Scene" to patreon, it's directly under this post for me

Anonymous

When do we get the directors commentary archive? I was around halfway through when it popped out of existence so thought I’d ask.

Shah Rahman

Not sure what you mean by 'archive', there are 8 director's commentary videos in total as of now, and 7 of them are on Patreon (search 'director' on CGP Grey's Patreon page). The remaining one is TEKOI which is available for free on his Youtube channel.

Anonymous

Still not there, actually. It cut off at a really annoying mid sentence point for me so I’m extra curious.

Junileaf

It's awesome that you showed the correct equations in the physics portion. Often it seems that pop science explanations of physics dont like showing the equations, which feels disingenuous because thats the language of physics. As an aside: I also wanted to cheerlead the multipole expansion you showed because its so versitile - you can do the same technique on gravity to derive the tidal forces.

Anonymous

Like some other users, I'm confused about the director's commentaries. I saw that one was going live on Youtube and thought it would show up here, but the latest I see is still metric paper. Does it just take a while to upload?

Anonymous

Not sure. A bit disappointed that we weren't notified before it started.

Michael Valvano

Did he post the director's commentary yet

Chris Flad

Grey, where is our Directors commentary? It's been over a year since the last one.... Please fix.

jemmons

OMG I died at 4:16. Every time I hear the number 108 in any context (okay, it doesn't come up often. But when it does—) I always hear in my head: midshipman: "Helm! 108!” robot: “Helm to 108.” Thank you for making me feel less crazy.

Kyle Krawczak

I love these videos! I remember watching this as a student pilot! Great channel!