Part 1: http://youtu.be/ahXIMUkSXX0 Part 3: http://youtu.be/14-NdQwKz9w More on Angle-a-trons: http://www.youtube.com/watch?v=o6W6P8JZW0o Here is a program that draws plant leaves at whatever angle you want: http://www.khanacademy.org/cs/plant-leaves/822940457 Note: Beautiful spirally non-Fibonacci pinecones are very rare! If you find one, keep it. My personal website, which you might like: http://vihart.com
Notes and References: http://youtu.be/POKWkuwoihM Part 1: http://youtu.be/ahXIMUkSXX0 Part 2: http://youtu.be/lOIP_Z_-0Hs How to find the Lucas Angle: http://youtu.be/RRNQAaTVa_A My personal website, which you might like: http://vihart.com
SpongeBob background designer's response: "OK, I guess the jig is up... I'm tired of living a lie." See his full message and pineapple redesign: http://kennypittenger.blogspot.com/2012/01/called-out.html P.S. http://youtu.be/sFTwc8kHSu4 For more on Fibonacci and Plants: http://youtu.be/ahXIMUkSXX0 For more snail: http://youtu.be/xbsAUq_nvxE My personal website, which you might like: http://vihart.com
Slower 60-degree angle, polygon-a-tron, and tetrahedron-a-tron: http://youtu.be/uniqFnmcllE This is a follow-up from Being a Plant part 2: http://youtu.be/lOIP_Z_-0Hs Which comes after part 1: http://www.youtube.com/watch?v=ahXIMUkSXX0 My personal website, which you might like: http://vihart.com
Playing mathematically with fruits by the foot. Mobius Story, Wind and Mr. Ug: http://www.youtube.com/watch?v=4mdEsouIXGM Mobius Candy buttons: http://www.youtube.com/watch?v=OOLIB3cjFqw Mobius Music box: http://www.youtube.com/watch?v=3iMI_uOM_fY Doodling Snakes + Graphs (Useful for drawing Borromean rings): http://youtu.be/heKK95DAKms My personal website, which you might like: http://vihart.com
What other amazing properties of Wau can you think of? Leave them in the comments. My personal website, which you might like: http://vihart.com
How to make snazzy-lookin' fractal equations using simple algebra. For more abacabadabacaba: http://www.abacaba.org/ and http://books.google.com/books?id=QpPlxwSa8akC&pg=PA60&lpg=PA60&dq=abacabadabacaba+%22martin+gardner%22&source=bl&ots=92eAyvrZGV&sig=J2uvF2DAyn9kY8nSarSy-XIXW74&hl=en&sa=X&ei=Np45T4K9GYixiQK92NG2Bg&ved=0CCEQ6AEwAA#v=onepage&q&f=false My personal website, which you might like: http://vihart.com
A follow-up, with examples of numbers that are infinite and non-repeating but don't contain all combinations of digits: http://youtu.be/8PUJvAlD64k Happy Pi Day! Also see: Pi is (still) Wrong: http://youtu.be/jG7vhMMXagQ Pi in Binary Hand Dance: http://youtu.be/OCYZTg3jahU Special thanks to Toby (or not Toby) for playing Dog Hamlet. This cool website lets you search the first 200,000,000 digits of Pi. See if your phone number or encoded name is in there! http://www.angio.net/pi/piquery Seven Sonnets: Are Shakespeare's plays encoded within Pi? The truth is: we don't know, but we suspect They're somewhere in those digits. And now I Will show why we don't know if we're correct. You see, we think the digits do behave As if they were a random sequence, and So many mathematicians tried to brave This question, but we still don't understand. Pi isn't random: each digit must be Exactly what the definition states. It's pseudo-random, far as we can see, But it's the subject of intense debates. Now I'll explain, with this parameter: It's all in iambic pentameter. You may have heard of this scenario: A thousand monkeys type at keyboards 'till They write the works of Shakespeare. Even though, In one life it's a task they can't fulfill. If you allow their kids to carry on, All through the generations working hard, They will evolve before they come upon A single sonnet written by the Bard. But still, the theory's sound! And it is true That with a random and infinite set Of letters, that eventu-ally you Will find whatever words you want to get. However, on this thing you can depend: Before you do, the universe will end. Pi is a number, and that's why I can Completely guarantee no part will be 9-1-3-7-5-2-2-8-ten 4-7-9-H-A-M-L-E-T. You'd have to make up something, like a code Where zero-one is A, Oh-three is C, Or you could also choose some other mode, Oh-2 could be "to be or not to be." But let's go with this sys
A couple examples of how numbers can be infinite and non-repeating, yet still not contain every possible combination of digits (much less with equal frequency!). Re: "Are Shakespeare's Plays Encoded Within Pi?" http://youtu.be/uXoh6vi6J5U It's easy to invent a number that's Irrational, it goes and won't repeat, Yet still won't ever have Macbeth with Cats Or something short and simple as a tweet. Imagine you put 1, then 2, then 1, Then two 2s, one, three twos, one, dot dot dot... It's non-repeating, and never is done. But is there "123" in here? There's not. Take zero, then Oh 1, and then repeat The last two parts together. Oh Oh One. And then repeat the last two parts again. 0-1, 0-0-1. Anyway that's neat, And Pi is still irrational, we're sure. And transcendental. We don't know much more. My personal website, which you might like: http://vihart.com
Point Nine Repeating Equals One! 9.999... reasons in 9.999... minutes. Bonus points if you can name all 9.999... lords a-leaping. Dear YouTube, wouldn't it be nice if I could include the full script with this video? A larger character limit would not be unreasonable. My personal website, which you might like: http://vihart.com
Take that, mathematics! Original Video: http://www.youtube.com/watch?v=TINfzxSnnIE My personal website, which you might like: http://vihart.com
Correction: when I mark where pi is on the graph, I meant pi/2! Note: If this video were supposed to be teaching you, I'd probably have to make it boring and say that in one sense of limits, spoiler alert, you actually do approach a circle and a line, solving the apparent paradox by saying that the invariant of length does not hold over infinity. Luckily I am an artist, and this is a Rhapsody, and instead of "learning," you get to actually think, if you like. My personal website, which you might like: http://vihart.com
A visual and musical expression of mathematical symmetry groups. The transformations done to the video are equivalent to the transformations done to the notes. These type of repeating patterns are called frieze patterns. A couple wallpaper groups are also represented. My personal website, which you might like: http://vihart.com
Pythagoras had a problem with beans and irrationality. What really happened? I don't know! The square root of two is irrational, and beans are delicious. My personal website, which you might like: http://vihart.com
Happy Tau Day! This is a song about Tau! Other Tau things you should see: Pi is (still) Wrong: http://youtu.be/jG7vhMMXagQ What Tau Sounds Like: http://youtu.be/3174T-3-59Q Another Tau song for Piano: http://youtu.be/efM7DFMTp5c The Tau Manifesto: http://tauday.com/ Another cool Tau song: http://youtu.be/uAFU-K4M9Ck My personal website, which you might like: http://vihart.com
Note: accidentally switched Charm and Strange. The original version, wobbliness and inaccuracies and all, is here: http://www.youtube.com/watch?v=5kXdSmAJeu4 We now have found a Higgs-like particle. It is a Boson, we're 5-sigma sure. I read about it in an article, Along with facts a little more obscure. Now here's the mass of our beloved boson: 125.3 gigaelectronvolts, 133 times heavier than a proton. It's like we're seeing the universe's nuts and bolts. The standard model's other bosons are: Photons, gluons, W, and Z. These make the forces found in every star, Plus maybe gravitons for gravity. But what gives mass to heavy things like pigs? It is our new discovery: the Higgs -like particle. My personal website, which you might like: http://vihart.com
Note: I do not actually have interns. That was all just wishful thinking. But I do have very helpful coworkers who I managed to rope into pretending to be my interns! Thank you Arun (boring-drawing-stuff intern), Jace (hand makeup artist), Minli (stunt double and brow dabber), and Stephanie (sharpie control), and thanks Ethan for providing some of the "intern" footage. To see Ethan's video about how I made this video about making this video, go here: http://www.youtube.com/watch?v=z4x5FZyzLyQ My personal website, which you might like: http://vihart.com
A quickly-made muse on the foreword of anthropologist Edmund Snow Carpenter's They "Became What They Beheld," and how it relates to Youtube. This book is out of print. If you're interested, "Oh, What a Blow That Phantom Gave Me," another of his books, can be read online here: http://mediatedcultures.net/phantom/home2.html My personal website, which you might like: http://vihart.com
A dialogue with the number 2, with special guest Brady Haran of Numberphile and other channels! http://www.youtube.com/user/numberphile http://www.youtube.com/user/periodicvideos http://www.youtube.com/user/sixtysymbols My personal website, which you might like: http://vihart.com
Anti-parabola propoganda, plus musing on math class, cardioids, connect the dots, envelopes of lines, even a bit of origami. Another way to get a cardioid is to add up circles like this: http://www.khanacademy.org/cs/sum-of-circles/1021299343 Extra points to a certain Andrea whose line-enveloped Hilbert curve inspired me to finish this video. My personal website, which you might like: http://vihart.com
Hooraaaay flexagons! Happy October. Here's part 2: http://youtu.be/paQ10POrZh8 Hexaflexagon Safety Guide: http://youtu.be/AmN0YyaTD60 Support me on Patreon: https://www.patreon.com/vihart Historical Note: This video is based on a true story. Arthur H. Stone really did invent the hexaflexagon after playing with the paper strips he'd cut off his too-wide British paper, and really did start a flexagon committee (which we'll hear more about in the next video). The details and dialogue, however, are my own invention. This video is based on, and in honor of, Martin Gardner's first Mathematical Games column from 1956, "Hexaflexagons," which can be found here: http://maa.org/pubs/focus/Gardner_Hexaflexagons12_1956.pdf October 21st is Martin Gardner's birthday, which is why every October the recreational mathematics community celebrates his life and work. This year we're having hexaflexagon parties. You can join in too: http://www.puzzles.com/hexaflexagon/ You can find more about hexaflexagons all over the internet. flexagons.net has a lot of patterns for different kinds of flexagons, or here's the wikipedia page: http://en.wikipedia.org/wiki/Flexagon My personal website, which you might like: http://vihart.com
Happy October, Month of the Hexaflexagon! Part 1: http://youtu.be/VIVIegSt81k Hexaflexagon Safety Guide: http://youtu.be/AmN0YyaTD60 Oct. 21st is the annual Celebration of Mind, in honor of Martin Gardner. Maybe you'd like to host or attend a flexagon party sometime around then, or learn about other awesome Martin Gardnery things. Here's the hexaflexagon party website: http://www.puzzles.com/hexaflexagon/ For inspiration, here's pictures and stories from epic events in past years: http://www.puzzles.com/hexaflexagon/aroundtheworld.html This video is based on, and in honor of, Martin Gardner's column from 1956, "Hexaflexagons," which can be found here: http://maa.org/pubs/focus/Gardner_Hexaflexagons12_1956.pdf Historical Note: This video is based on a true story. Arthur H. Stone invented the Hexaflexagon and started a flexagon committee with his friends Tuckerman, Feynman, and Tukey (who all later became well-known in their respective fields). Tuckerman invented the Tuckerman Traverse, and Feynman invented Feynman Diagrams (not to be confused with Feynman Diagrams in physics, which is probably why flexagon diagrams are usually not called Feynman Diagrams anymore). The details of their interactions and dialogue, however, are my own invention. -Feynman stuff is from the biography "Genius," by James Gleik, p. 103-104 -The story of how Gardner learned about flexagons is from "An interview with Martin Gardner" in the June/July 2005 Notices of the AMS, p. 602-611 -Other historical information, including the text and names on some of the letters, are from Gardner's original article: http://maa.org/pubs/focus/Gardner_Hexaflexagons12_1956.pdf Thank you to the G4G-CoM committee for helping track down information, especially John Railing and Stan Isaacs for finding these sources. Also check out flexagon.net, a pretty good resource for patterns for flexagons of many types, and of course the wikipedia page on flexagons: http://en.wikipedia.org/wiki/Flexago
Don't let a flexigatastrophe happen to you! Flex Mex: http://youtu.be/GTwrVAbV56o Happy Hexaflexagon Month, in honor of Martin Gardner. Yes, we've been encouraging recreational use of hexaflexagons and even hexaflexagon parties to happen on Oct. 21, but be sure to flex responsibly. This is my third hexaflexagon video this month. The first two are also awesome. Hexaflexagons: http://youtu.be/VIVIegSt81k Hexaflexagons 2: http://youtu.be/paQ10POrZh8 To learn more about flexagons, Martin Gardner, or hosting a hexaflexagon party, go here: http://www.puzzles.com/hexaflexagon I stole the "hexaflexadyslexia" joke from @matthetube: https://twitter.com/matthetube/status/255446894128529408 I'm @vihartvihart. Happy Flexing! My personal website, which you might like: http://vihart.com
Might as well. My personal website, which you might like: http://vihart.com
I really don't know. Viewer beware. My personal website, which you might like: http://vihart.com
With Thanksgiving just around the corner here in the US, it is important to know how to arrange mathed potatoes on your plate for maximum gravy. Also shown are bread spheres, butter prism, and gelatinous cranberry cylinder. Green Bean Matherole: http://youtu.be/XwIs1nlDQ2I Borromean Onion Rings: http://youtu.be/4tsjCND2ZfM Turduckenen-duckenen: http://youtu.be/pjrI91J6jOw My personal website, which you might like: http://vihart.com
This Thanksgiving, make sure your table isn't missing the all-important green bean matherole. Pick your favorite vector field and have at it! Mathed Potatoes: http://youtu.be/F5RyVWI4Onk Borromean Onion Rings: http://youtu.be/4tsjCND2ZfM Turduckenen-duckenen: http://youtu.be/pjrI91J6jOw My personal website, which you might like: http://vihart.com
Borromean Onion Rings, the perfect way to top your Green Bean Matherole! Borromean onion rings were invented by special guest Marc ten Bosch (http://marctenbosch.com). Also shown are gelatinous cranberry cylinder, bread spheres and butter prism, mathed potatoes, apple pie, and pumpkin tau. Mathed Potatoes: http://youtu.be/F5RyVWI4Onk Green Bean Matherole: http://youtu.be/XwIs1nlDQ2I Turduckenen-duckenen: http://youtu.be/pjrI91J6jOw My personal website, which you might like: http://vihart.com
Forget turducken... I'm stuffing my turkey with two ducks, stuffed with four hens, stuffed with eight quail eggs. Honestly, I do not recommend trying this yourself. So what's your favourite naming scheme: breadth-first, depth-first, or inordered binary tree traversal? Mathed Potatoes: http://youtu.be/F5RyVWI4Onk Green Bean Matherole: http://youtu.be/XwIs1nlDQ2I Borromean Onion Rings: http://youtu.be/4tsjCND2ZfM My personal website, which you might like: http://vihart.com
Unusual variations on the paper snowflake. My personal website, which you might like: http://vihart.com
Folding and cutting spheres. Awesome symmetry balls include card constructions by George Hart, which you can learn about here (and others are on georgehart.com): http://youtu.be/YBUEYrzMijA and the Gardner Ball by Oskar van Deventer with design by Scott Kim made in honor of Martin Gardner, which you can learn about here: http://youtu.be/rVHXlltXIlI and the Wolfram rhombic hexacontahedron thingy, and others! My personal website, which you might like: http://vihart.com
Don't be afraid of your comments section! I am here to help, or maybe not! This video doesn't include legitimate/constructive criticisms because I don't consider those negative. Making a bad comment doesn't make you a bad person, but I will still make fun of you :D Remember: bigotry is bad, fair trade chocolate is delicious, and if you don't intend to set things on fire don't put fire near flammable things. My other video on artisty things: http://www.youtube.com/watch?v=bm-Jjvqu3U4 Charlie's video: http://www.youtube.com/watch?v=_56nx3eHK4c Hank Green's: http://www.youtube.com/watch?v=fGmAekTPD5c Michael Aranda's: http://www.youtube.com/watch?v=IPsVQHu5lA4 My personal website, which you might like: http://vihart.com
Music box, backwards Bach, orbifolds and wooden bowl. My personal website, which you might like: http://vihart.com
When you sing the digits of pi a cappella, you gotta really feel it. Lyrics: 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211 Michael Blake's What Pi Sounds Like: http://youtu.be/wK7tq7L0N8E Can't find Noam Elkie's pi piece online, but there's a piece of it here: http://youtu.be/vmRloJxLlvI Here's someone who plays pi with piano accompaniment with 0 being before 1, instead of after 9, and in minor: http://youtu.be/OMq9he-5HUU Of course people have encoded pi into music in other ways, or just sing the digits without any encoding at all: http://youtu.be/BDMBtQjS1bQ and http://youtu.be/-iqVyjOv8X0 Or rap the digits, like in this "Lose Yourself" parody: http://youtu.be/CS1WlUzjtXU And there's plenty of other stuff. I believe in your ability to find it. But however awesome pi music might be, remember: Pi is Wrong! http://www.youtube.com/watch?v=jG7vhMMXagQ My personal website, which you might like: http://vihart.com
This isn't the epic video I've been working on for months, I just couldn't sleep last night and had been reading too much Borges so this fell out. My personal website, which you might like: http://vihart.com
procrastinating, so made this. SOCKS CAN'T BE GHOSTS: http://youtu.be/tbzxWxTnC84 Also gotta get back in the running in the FIERCE COMPETITION with crashcourse, cgpgrey, and smartereveryday, who are all hovering around the same subscriber count. My personal website, which you might like: http://vihart.com
Remember folks, a circle is better defined by its radius than by its constant curvature or its diameter. Another technique: try looking at the center of the circle or some other fixed point, rather than moving your eyes to follow where you're drawing. Draw with your whole arm (motion should come from shoulder, not wrist or fingers). My personal website, which you might like: http://vihart.com
This was just a quick experiment but I'd love to see (hear) your better version, if you want to make one :D Doodle Music: http://youtu.be/Av_Us6xHkUc (there are a lot of great video responses to this, but YouTube removed video responses. Search "sound braid" and check them out!) My personal website, which you might like: http://vihart.com
It's a video. Support me on Patreon: https://www.patreon.com/vihart You can download it from Vimeo: vimeo.com/vihart Or torrent it, see http://vihart.com/list-of-torrents/ Also the sheet music for the Mary quartet is here: http://imgur.com/a/hgy9Q#0 (if you happen to play/sing it, do let me know!) And individual mp3s are downloadable on my Soundcloud: http://soundcloud.com/vihartvihart TAKE EVERYTHING I DON'T WANT IT ANYMORE
You can totally draw fractals freehand, yo. Tomorrow's class is here: http://www.youtube.com/watch?v=dsvLLKQCxeA Things to look up if you want: Dragon Curve, Sierpinski's Triangle, L-systems, fractals, space-filling curves. You can download this video via torrent: magnet:?xt=urn:btih:09AB515A79FCB98DEA8CA17E3E99914597573872&dn=Doodling_DRAGONS_ViHart.mp4&tr=udp%3a%2f%2ftracker.openbittorrent.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.publicbt.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.ccc.de%3a80%2fannounce My personal website, which you might like: http://vihart.com
This is day 2 of logarithms class. Day 1 is here: http://www.youtube.com/watch?v=EdyociU35u8 You can download this video via torrent, if you want. It is CC BY-NC-SA. magnet:?xt=urn:btih:E83E39F0F58171219C3EFAA0B54B4338E02D8049&dn=Doodling_Dragon_Dungeons_ViHart.mp4&tr=udp%3a%2f%2ftracker.openbittorrent.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.publicbt.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.ccc.de%3a80%2fannounce My personal website, which you might like: http://vihart.com
Finally, no more logarithms! Day 1: http://www.youtube.com/watch?v=EdyociU35u8 Day 2: http://youtu.be/dsvLLKQCxeA This video is CC BY-NC-SA. You can download it via torrent here: magnet:?xt=urn:btih:195EC5FACFB9C1F9DC05DF4816D9D211EB483FF2&dn=Doodling_Dragon_Scales_ViHart.mp4&tr=udp%3a%2f%2ftracker.openbittorrent.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.publicbt.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.ccc.de%3a80%2fannounce (you'll have to copy and paste the link, and if you use Chrome make sure to choose the drop-down page option, because its default action is to websearch the link rather than go to the link; also, you'll need a bittorrent client if you don't have one already) My personal website, which you might like: http://vihart.com
also might as well explain all of elementary algebra You can download this video via torrent: magnet:?xt=urn:btih:8E674518C6DF385229E541A3055463998C6B4492&dn=HowIFeelAboutLogarithms_ViHart.mp4&tr=udp%3a%2f%2ftracker.openbittorrent.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.publicbt.com%3a80%2fannounce&tr=udp%3a%2f%2ftracker.ccc.de%3a80%2fannounce (you'll have to copy and paste the link, and if you use Chrome make sure to choose the drop-down page option, because its default action is to websearch the link rather than go to the link; also, you'll need a bittorrent client if you don't have one already) My website is http://vihart.com
Avoiding math to have a relaxing Saturday with friends. Links to everyone's cool stuff below: Gwen Fisher: http://www.beadinfinitum.com/ She also has a blog: http://gwenbeads.blogspot.com/ Also buy everything from her etsy shop before someone else does: https://www.etsy.com/shop/gwenbeads Ruth Fisher: http://www.sweetsbyruth.com/ Or if you're in Mountain View you may have seen her stuff in Red Rock or Ava's Grocery. Coffee plus chocolate caramel brownie please! Andrea Hawksley: http://andreahawksley.com/ Don't forget to hover your mouse over her name (hooray ambigrams!), and check out her blog. Henry Segerman (http://segerman.org) is the creator of the rotating 4d monkey gif, with monkey models by Will Segerman (http://willsegerman.com). Henry's post with the gif is here: https://plus.google.com/+HenrySegerman/posts/ffvryRQnojN Hoping to talk more about that in a future video!
Sorry, Pi lovers! Maybe pick a better favorite number next time?
Comprehensive info. From 2014 when we narrowly avoided losing net neutrality, but they just keep trying, don't they? 2017 version of this video would be almost identical. Much links and fun times below: We've stopped things like this before! You have power if you bother to take it. Video script and better formatted version of the links below can be found on my blog: http://vihart.com/net-neutrality-in-the-us-now-what/ Politicians love when you personally contact them! It is a fact. If you're not in the US, make sure your local government considers this state of affairs an embarrassment for the US, not something to model your own rules on. List of FCC commissioners and their twitters, emails, blogs, instagrams, etc: http://www.fcc.gov/leadership Don't know how to contact your representative? Find out who they are and let them know you're watching them! http://whoismyrepresentative.com/ List of all proceedings available for comment: http://apps.fcc.gov/ecfs/hotdocket/list Learn more about all this stuffs: Court case ruling cable internet as an "information service" rather than "telecommunications service": http://en.wikipedia.org/wiki/National_Cable_%26_Telecommunications_Association_v._Brand_X_Internet_Services Communications act of 1934, describing common carriers under title II: http://en.wikipedia.org/wiki/Communications_Act_of_1934 Telecommunications act of 1996, including Title V, the CDA: http://en.wikipedia.org/wiki/Telecommunications_Act_of_1996 Communications Decency Act, part of the Telecommunications act of 1996, which protected ISPs from liability: http://en.wikipedia.org/wiki/Communications_Decency_Act The FCC's Open Internet Order 2010: http://en.wikipedia.org/wiki/FCC_Open_Internet_Order_2010 Verizon had the above overturned in 2014 as not applying to non-common carriers: http://en.wikipedia.org/wiki/Verizon_Communications_Inc._v._Federal_Communications_Commission_(2014) A couple other attempts at net ne
A lot. List with links: http://vihart.com/how-many-kinds-of-infinity-are-there/
Yes, this video references The Fault in our Stars by John Green.
Simple addition mistakes are my favourite! Replace ...55555 + ...5555 with ...99999 + 1 or ...5555 + ...44445 or something, I'm sure you can figure it out. edit 2: Yes, you'll have to slightly change the algebra to prove that math breaks when you replace the numbers above. I have full confidence in you. Proof some infinities are bigger than other infinities: http://youtu.be/lA6hE7NFIK0
Exactly 0% of numbers are rational.
It's "Super Pi Day." OR IS IT? Last Year's anti-pi rant: https://youtu.be/5iUh_CSjaSw?list=PL5F03A9D6D278C5D9 Original "Pi is (still) Wrong" video: https://youtu.be/jG7vhMMXagQ?list=PL5F03A9D6D278C5D9 This year's Pi Day Anthem: https://youtu.be/NsKH5h7j2_o?list=PL5F03A9D6D278C5D9 Next year is Engineer's Pi Day, so called because we properly round the digits instead of truncating them. The name was coined by Artery Lines on facebook! https://www.facebook.com/permalink.php?story_fbid=867123683333759&id=154711904574944&comment_id=867310949981699&offset=0&total_comments=17
Caitlyn Jenner has me thinking about gender and how I was a terrible unhappy teenager. These are some personal thoughts, adapted from http://vihart.com/vi-hart-weekly-june-5th/
A spherical video for Tau Day! 360 degrees of video, or is it? More vlogs in 360: https://www.youtube.com/watch?v=prpc3xV6eVw&list=PLMOkPN93Z3huoace5h4NGesuPePjgII-h I've been doing spherical video and VR stuff for over a year now, with Emily Eifler and Andrea Hawksley as the VR research group eleVR. A year ago we had to build our own camera and stitch video by hand and write our own video player but now I can just film with this little camera and post it online, it's awesome! We have other stuff on our eleVR channel too: https://www.youtube.com/channel/UCGSW-G716AyjUlNJCNl-mAg And we have lots of research content on our website: http://elevr.com If you're ever too confused about where I am and what I'm doing, there's always my twitter @vihartvihart and my website http://vihart.com Song is here on soundcloud, you can download it or whatever https://soundcloud.com/vihartvihart/a-song-about-a-circle-constant-1 The original Tau song: https://youtu.be/FtxmFlMLYRI I particularly like this remix: https://youtu.be/0dSXHQ4utCA Don't know what Tau is? see "Pi is (still) Wrong" https://youtu.be/jG7vhMMXagQ
Trying to list all the numbers, yet again... The Infinite Series playlist: https://www.youtube.com/playlist?list=PLaNzoFtkQ7rYwjp8AlVBp576YK_sdfyi8
I've always held a fascination for this song... WHAT IS UP WITH IT. http://www.shadesofgraylaw.com/media/00065570.pdf
Warning: may cause headaches, nausea, abject terror, uncontrollable laughing. About shepard tones, in shepard tones. Soundtrack is free here: https://soundcloud.com/vihartvihart/shepard-tones-soundtrack This video is CC-by, feel free to re-use for any purpose with attribution.
This year, Pi Day is round. A rallying cry against those who would praise appearance over substance. Pi/Anti-Pi playlist: https://www.youtube.com/watch?v=jG7vhMMXagQ&list=PL5F03A9D6D278C5D9&index=1
Some thoughts on tools that have been floating around my mind.
Two shootings in Orlando last weekend. We barely had time to start grieving Christina, a fellow member of the YouTube community, when the Pulse shooting happened. This is mostly about my personal experience with the culture of fame, harassment, and violence against women.
Wanted to do something upbeat this week, so I'm re-styling the digital part of my living room!
If you haven’t been paying much attention to Black Lives Matter, it’s not too late to catch up to where I’m at. Let’s keep listening and learning together. This is a quick overview of some events relevant to the history of the Black Lives Matter movement. It is not meant to judge any particular person or group involved as guilty, innocent, racist, or not, but to give context to why the movement matters to so many people, including myself.
TRUE STORY. Part 2: https://youtu.be/3zQsYJi5pFE
Mathematically, they've got a lot going for them. Last week's video on the calculus of bad driving: https://www.youtube.com/watch?v=pI62ANEGK6Q NOTE: Leibniz independently discovered/invented calculus. Liebnitz is my imaginary slope friend.
A different perspective on the 2016 presidential election, based on statistics in context. Full text: http://vihart.com/a-mathematicians-perspective-on-the-divide/ This video is Public Domain CC0: https://creativecommons.org/publicdomain/zero/1.0/ Feel free to share, use, remix, commercially or noncommercially, with or without attribution. There's a lot to talk about and do following this election, so I thought I'd talk about some of the stuff I haven't seen other people talk about. Don't forget to speak out, call your representatives, and keep an eye on 2018. I'd love to see someone with access to finer grained data follow up on some of this! Comments closed because there were too many of the same partisan reactions you see everywhere else, and that doesn't help anyone consider new perspectives. But I encourage discussion of this video in a longer less-shallow form than the YouTube comment system can provide, especially doing it in real life with people you know. Looking for a way to expand your community interactions to include more diverse age ranges? See what's up at your local library and museums.
On the virtue of good habits, rather than anger and dramatic causes, for sustaining democracy. If you wait for big motivating problems before acting, you'll be comparatively ineffective both because of waiting too long and your own lack of practice engaging with politics, which makes you susceptible to those who would prey on your anger and disappointment. If you’re in the US, find out who your representatives are here: http://www.whoismyrepresentative.com/ You can search their name to find out more about them and their positions, or you can just call them and ask! Hank Green's excellent video about how to write a letter to your representative, with examples and info in the description: https://www.youtube.com/watch?v=mp4h-3vQafk There’s tons of videos on the internet of people calling their representatives, so you can get an idea of what it’s like. Want to know more about the electoral college? Mickeleh’s video series on the electoral college has uncommon depth: https://www.youtube.com/watch?v=8zac-2V7CTs He argues against the idea that they should change their votes: https://www.youtube.com/watch?v=M2vV9xBOSmY UK person? Rosianna on post-Brexit political participation: https://www.youtube.com/watch?v=uLxzv6HmyHk The internet is full of information for wherever you are and whatever you care about. Also talk in person to friends, family, and people in your community, to learn what they know and help each other take action!
Piano peace! In 360 and with 3D audio (you can look around and move the view!). Check out the making of video, it's REAL COOL: https://youtu.be/x1zJoU6Luss Use your phone and youtube app with headphones to be able to look around with spatial audio on this video. The making of video also includes a flat version so you can see it all at once. This is a collaboration with mathematician Henry Segerman, with additional help from physicist Sabetta Matsumoto. There’s a surprising amount of theory behind this video that we get into a little bit in the making of. Crowdfunded on Patreon! Special thank you to Caleb Wright, Albert Wenger, Pat Devlin, Jack Heidrick, David Perryman, Jeremy Buchanan, Chris Pierik, Wish Society, Carol Hart, Andrea Di Biagio, Charley Sheets, Jodi Vezzetti, Andrew Romaner, Michael Tiemann, and Yana Chernobilsky. Join us: https://www.patreon.com/vihart http://vihart.com
I found some thinkable things! Rolling Trefoil by Henry Segerman: https://www.youtube.com/watch?v=fVjcDBBrn-A Very cool wobbly rolling objects at the Museum of Mathematics in NY: https://www.youtube.com/watch?v=L_z04poueUA Rattlebacks are also on my list of cool mathematical wobblers, though less rolly: https://www.youtube.com/watch?v=11NHjiEYnI0 This video exists through support on Patreon! Special thank you to Caleb Wright, Albert Wenger, Pat Devlin, Jack Heidrick, David Perryman, Jeremy Buchanan, Chris Pierik, Wish Society, Carol Hart, Andrea Di Biagio, Charley Sheets, Jodi Vezzetti, Andrew Romaner, Michael Tiemann, and Yana Chernobilsky. Join us: https://www.patreon.com/vihart http://vihart.com
2018 Pi is just the worst. Are you a true believer? Show me: https://www.patreon.com/vihart This video exists through support on Patreon! Special thank you to Caleb Wright, Albert Wenger, Pat Devlin, Jack Heidrick, David Perryman, Jeremy Buchanan, Chris Pierik, Wish Society, Carol Hart, Andrea Di Biagio, Charley Sheets, Jodi Vezzetti, Andrew Romaner, Michael Tiemann, and Yana Chernobilsky. Join us: https://www.patreon.com/vihart http://vihart.com
Based on a true story! Some things are simpler than they sound. Sponsored by Caleb Wright, Albert Wenger, Pat Devlin, David Perryman, Chris Pierik, Wish Society, Carol Hart, Andrea Di Biagio, Charley Sheets, Jodi Vezzetti, Andrew Romaner, Michael Tiemann, and Yana Chernobilsky. Funded through Patreon. Check it out: https://www.patreon.com/vihart http://vihart.com
Finally, some answers! Funded by my generous supporters on Patreon. Thank you Caleb Wright, Albert Wenger, Pat Devlin, David Perryman, Jade Bilkey, Donald "Chronos" King, Jack Heidrick, Chris Pierik, Andrew Romaner, Jodi Vezzetti, Carol Ghiorsi Hart, Wish Society, Charley Sheets, Yana Chernobilsky, and Michael Tiemann! Join us, it's a fun time: https://www.patreon.com/vihart Part 1 on metachirality: https://youtu.be/3ONwD9a9DWs
I guess we should regulate ouija boards, eh? ok is it awkward if I offer to sell you a shirt now: https://store.dftba.com/products/tau-day-shirt But while shirts are good capitalism and all, my work is almost completely supported through crowdfunding on Patreon. There's some fun perks over there if you want to join the cult. I mean... be the audience to my secret arts. https://www.patreon.com/vihart These good patrons have given particular support, thank you: Caleb Wright, Albert Wenger, Pat Devlin, Jack Heidrick, Jade Bilkey, David Perryman, Chris Pierik, Donald "Chronos" King, Carol Ghiorsi Hart, Andrea Di Biagio, Charley Sheets, Jodi Vezzetti, Andew Romaner, David A Smith, Michael Tiemann, and Yana Chernobilsky! It is not inevitable that we ruin everything! People are good at stepping up and doing not-ruining, sometimes.
Supported by Patreon! https://www.patreon.com/vihart Shirts: https://store.dftba.com/collections/vi-hart/products/tau-day-shirt Especially thank you to: Caleb Wright, Albert Wenger, Pat Devlin, Jack Heidrick, Jade Bilkey, David Perryman, Chris Pierik, Donald "Chronos" King, Carol Ghiorsi Hart, Andrea Di Biagio, Charley Sheets, Jodi Vezzetti, Andew Romaner, David A Smith, Michael Tiemann, and Yana Chernobilsky! Arts: https://www.sfmoma.org/artwork/FC.744 https://www.sfmoma.org/exhibition/louise-bourgeois-spiders/#
A new take on a classic. In response to this collab: https://www.youtube.com/watch?v=VvCytJvd4H0 "Topology Joke": https://www.youtube.com/watch?v=9NlqYr6-TpA Susan Goldstine's bead crochet video: https://www.youtube.com/watch?v=4DR7rNty1eQ Susan has also collected a page of other artistic renditions of the 7-color torus and links to instructions for beadwork, fiber arts, and other further reading: http://faculty.smcm.edu/sgoldstine/torus7.html This video not sponsored by or affiliated with mathsgear, but here's where they sell the official version of the mug: https://mathsgear.co.uk/products/utilities-puzzle-mug This video is supported by viewers like you on Patreon! Thank you especially to Caleb Wright, Albert Wenger, Pat Devlin, Jack Heidrick, David Perryman, Jade Bilkey, Chris Pierik, Donald "Chronos" King, Andew Romaner, Jodi Vezzetti, Carol Ghiorsi Hart, Andrea Di Biagio, Charley Sheets, Yana Chernobilsky, David A Smith, and Michael Tiemann! Oh, and we put in the order for the Tau Day shirts, but we ordered some extra so here's a link to shirts and hopefully your size is still available! https://store.dftba.com/collections/vi-hart
Can of soup or can of worms? Either way, it's opened. This video is supported by viewers like you on Patreon: https://www.patreon.com/vihart Thank you especially to Caleb Wright, Albert Wenger, Pat Devlin, Jack Heidrick, David Perryman, Jade Bilkey, Chris Pierik, Donald "Chronos" King, Andew Romaner, Jodi Vezzetti, Carol Ghiorsi Hart, Andrea Di Biagio, Charley Sheets, Yana Chernobilsky, David A Smith, and Michael Tiemann!
Best Shape 2018! This video is VR180, so if you have a cardboard or other headset you can see the shapes in stereo, or look around in magic window on a phone or drag the video with the cursor. Scutoids are officially named for the first time in this paper: "Scutoids are a geometrical solution to three-dimensional packing of epithelia" https://www.nature.com/articles/s41467-018-05376-1 Special thanks to Clara Grima for answering my scutoid questions, and to Laura Taalman and Tom Ruen who contributed to the creation of paper scutoid nets based off of 3D scutoid models by Laura Taalman, who invented the packable pair of identical scutoids (see https://www.thingiverse.com/thing:3024272 ) , and John Peplinski, who created the space-filling cairo tile scutoid design (see https://www.thingiverse.com/thing:3042446 ). More on that next time! Also thank you Caleb Wright, Albert Wenger, Pat Devlin, David Perryman, Jade Bilkey, Chris Pierik, Donald “Chronos” King, Andew Romaner, Jodi Vezzetti, Carol Ghiorsi Hart, Andrea Di Biagio, Charley Sheets, Yana Chernobilsky, David A Smith, Michael Tiemann, and all of my patrons on Patreon! You too can support my work here: https://www.patreon.com/vihart For more on scutoids, including paper nets: http://vihart.com/scutoids Oh, and if you want that cool hexaflexagon poster or triangle pin, hey, I do have merch: https://store.dftba.com/collections/vi-hart
They were thinking of canceling Pi Day due to the new Coronavirus?? NOPE WE GOT THIS. Stay home, Pi! This year we're doing Pi Day as a purely online event. Please feel empowered to eat a pie by yourself. We're not saying you won't get coronavirus or give it to someone else, but how often do you get the opportunity to save lives by procrastinating and delaying the inevitable? Slow the spread, wash your hands, and have opinions about mathematical constants. This video is sponsored by Patreon Patrons like you. Special thanks to Ray Sidney, Pat Devlin, David Perryman, Andew Romaner, Andrea Bi Biagio, Carol Hart, Jodi Vezzetti, Yana Chernobilsky, and David Smith! Associated blog post: http://vihart.com/pi-day-rant-2020/ If you're looking for data on the novel coronavirus, here's a good website: https://ourworldindata.org/coronavirus
A bipartisan group of experts in every field have agreed on a plan for #HowWeReopen. We CAN do this! Check out the report: https://ethics.harvard.edu/covid-roadmap And a pile of supporting materials like in-depth papers on different aspects: https://www.pandemictesting.org/ Here's some press we've already gotten: https://abcnews.go.com/US/road-map-recovery-report-20-million-coronavirus-tests/story?id=70230097&cid=social_twitter_abcn https://www.wbur.org/news/2020/04/20/harvard-ethics-roadmap-to-pandemic-resilience-danielle-allen https://www.washingtonpost.com/opinions/2020/04/20/three-key-ideas-stake-post-coronavirus-future/ https://www.msnbc.com/morning-joe/watch/harvard-report-details-steps-to-pandemic-resilience-82292293667 and a blog post I made about this video: http://vihart.com/how-we-reopen/ WOOOOOOO! YEAH! Hello! :D
Pi is taking an hour from us! Let's get mad, then maybe drift off to soothing music to give ourselves that hour back. Thank you to this tweet by @darrenglass and via @tweetsauce which not only reminded me that Pi Day was coming up and I should probably make a video, but from which I 100% stole the title and intro: https://twitter.com/darrenglass/status/1367978449864974337 This video is sponsored by Patreon Patrons like you! Special thanks to Ray Sidney, Pat Devlin, David Perryman, Andew Romaner, Andrea Bi Biagio, Jodi Vezzetti, Yana Chernobilsky, and David Smith, plus an extra thanks from my piano to Caleb Wright. More thanks are here: http://vihart.com/thanks/ Happy Pi Day, everyone. I know it's been not just a long while but also a weird while, and I'm glad to see you're still here with me.
I saw a shape in a poster, and the rest could not be helped. Want to make your own BTS Octahedron? http://vihart.com/bts/ Also see vihart.com/bts for more info, links, and original files that you can edit, translate, and reuse however you want. This work is sponsored by Patreon Patrons like you! Special thanks to Ray Sidney, Pat Devlin, David Perryman, Andew Romaner, Andrea Bi Biagio, Jodi Vezzetti, Yana Chernobilsky, David Smith, and Caleb Wright. For more paper octahedron fun, this intermediate origami octahedron by Jeremy Schafer is just wonderful: https://www.youtube.com/watch?v=rc5EGPo4Op0 One of the playing card constructions is "6 Card Ball" by Andrea Hawksley, she has DIY instructions here: http://blog.andreahawksley.com/six-card-ball/ The 12 card construction is by George Hart and has instructions here: http://georgehart.com/g4g10/ Also seen are a set of Skew Dice by Henry Segerman, as featured in this Numberphile video: https://www.youtube.com/watch?v=uAnCL3vhVIs You may see a peek of a set of 4 truncated octahedra with one for each member of the Beatles. These came from the brilliant mind of an artist on Etsy named Tess, though she no longer seems to have a shop or a public-facing web presence. Tess, if you see this please please tell me WHAT WAS GOING THROUGH YOUR MIND WHEN YOU DECIDED BEATLES TRUNCATED OCTAHEDRA WERE A THING THAT NEEDED TO EXIST. Because you were right. So right. You give me faith that BTS Octahedra need to exist too.
This video is... itself. Good job, video! This work is sponsored by Patreon Patrons like you! Particular thanks to Ray Sidney, Pat Devlin, David Perryman, Andew Romaner, Andrea Bi Biagio, Jodi Vezzetti, Yana Chernobilsky, David Smith, Alan Boulton, Nancy Blachman, and Caleb Wright. Want to make your own BTS Octahedron? http://vihart.com/bts/ has lots of files and links. Also see the previous video: https://www.youtube.com/watch?v=YPKUbfIrlL8 If you want to attempt to make the thing at the end of this video (spoilers) you can, but I must say I don’t recommend it to those without a lot of experience with these kinds of things. I know some of you out there who will definitely go ahead and make it even without a pattern because these things are in your nature too (you know who you are), so to make your lives easier, here: http://vihart.com/wp-content/uploads/2021/09/twelve-threads-octahedron.pdf Chapters: 00:00 Beginning 00:27 Dice: Wrong About Numbering? 01:58 Comments: COPPA 03:51 Symmetry: Having IDEAS 05:20 Dice 2: Is My Octahedron Wrong? 10:50 Comments 2: Clickocracy 12:44 Symmetry 2: Failure. 15:55 Dice 3: MORE DATA 24:43 Comments 3: “Influencer” 26:45 Symmetry 3: Stubborn Failure 28:15 Comments 4: Comfort with Not Knowing 29:27 Symmetry 4: Wrapping Up 31:19 Dice 4: ?? 36:04 End
Original Title: IT'S PI DAY. AGAIN.
The official announcement video: http://youtu.be/eWuAYoHysIo Sal's you tube channel: http://www.youtube.com/khanacademy http://www.khanacademy.org How will this affect this channel? Well, previously I lived off of speaking fees, ad money, and donations. Now I get to spend less time in airports and more time making videos, plus this is now an ad-free channel! I also have more resources and am surrounded by awesome people doing awesome things, so basically this is good for everyone.
How I make a video, including what got cut, and Lens clips uploaded during the filming process. Lens is a Patreon thing, so join us: https://www.patreon.com/vihart This video made possible by Caleb Wright, Albert Wenger, Pat Devlin, David Perryman, Jade Bilkey, Donald "Chronos" King, Jack Heidrick, Chris Pierik, Andrew Romaner, Jodi Vezzetti, Carol Ghiorsi Hart, Wish Society, Charley Sheets, Yana Chernobilsky, Michael Tiemann, and viewers like you! Part 1: Metachirality? https://youtu.be/3ONwD9a9DWs Part 2: Metachirality! https://youtu.be/8NmHZEKkkpM