Vsauce

A handful of numbers have a very special property: you can add their digits together and divide the original number by their total without a remainder. And why does it matter? Well, in terms of mathematics, it’s mostly a curiosity. Dattatreya Ramchandra (D. R.) Kaprekar saw these numbers as sparking joy in the mind, so
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We can’t write out every digit of Pi every time we use it, but we’ve got to represent it somehow. And you were probably taught that 22/7 was a great option. Well… it’s an okay option. It’s not bad, but it’s not amazing. 355/113 is so close to the real value of Pi that you
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Usually when you look at a nice round or coordinated number, it’s components are obvious. Like 333 — you know there are 111 threes in there, and even 111 is made up of 37 threes. 1,000 is 10 hundreds, and those hundreds are 10 10’s. But when you break down 1,111,111, you find that it
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Bitdefender Total Security (Extended Free Trial) – https://www.bitdefender.com/media/html/consumer/new/WI-S-Bitdefender/?cid=inf&7Cc%7Cig¾7CVS2Q4 Thanks to Bitdefender for supporting Vsauce2. We know what infinity is… it’s something that never ends. It’s right in the name: ‘doesn’t finish.’ But is it possible to have more than one infinity? Can one infinity be larger than another? And if we say yes or no,
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Bitdefender Total Security (Extended Free Trial) – https://www.bitdefender.com/media/html/consumer/new/WI-S-Bitdefender/?cid=inf%7Cc%7Cyt%7CVS204 Thanks to Bitdefender for supporting Vsauce2. As math and our minds both become more sophisticated, we can use strategies like probability to fill gaps in the unknown. That’s particularly useful in a court of law, where we almost never have all the facts we need. But what
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Goldbach’s Conjecture states that every even whole number greater than 2 is the sum of two prime numbers. So, 28 is 11 + 17… 62 is 43 + 19… and it goes up. WAY up. We’ve calculated every value up to 4 x 10^18, so it’s got to be provable, right? WRONG. One guy tried
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Sign up to Morning Brew for free today: https://bit.ly/mbvsauce2 Thanks to Morning Brew for supporting Vsauce2. “… for the root of all evils is the love of money,” states the First Epistle of Paul to Timothy — and no woman in 19th century America exemplifies that more than Hetty Green. She was a remarkable, talented
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Just because you see a number like 100,000 doesn’t mean it’s actually 100,000. We operate in a base-10 numeral system, and it’s got the familiar 10-based decimal root — and “decimal” even comes from the Greek “deca” prefix meaning 10. But… not everyone thinks of the world in tens. Mainland Europeans used dozens, the Chinese
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Where would we be with this dot?! It doesn’t seem like much, but it’s a critical element to our quick understanding of numbers. Without a decimal point or radix point, we have to mentally solve a little puzzle to figure out what the numbers we see actually mean. But with it, we know exactly what
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What do you do when you’ve got a mathematical expression that’s unsolvable because the numbers you need don’t exist? You do what Hero of Alexandria did: you just invent one. That’s how we got the concept of imaginary numbers, which Rene Descartes derided as being totally useless. Turns out he was wrong. #shorts
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Go to https://keeps.com/Vsauce2 to get 50% off your first order of Keeps hair loss treatment. Thanks to Keeps for sponsoring this video. When Joyce Ann Brown saw her name in the newspaper in connection with a gruesome murder, she went straight to the police to clear up the obvious error. She was at work when
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Find out which companies have your data and reclaim it by visiting: https://bit.ly/saymine-vsauce2 Thanks to Mine for supporting Vsauce2. When tragedy struck Madrid on March 11, 2004, the international community including the FBI rushed to help Spanish police identify the perpetrators. Some of them were too eager. A partial fingerprint match to Oregon lawyer Brandon
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What IS 1? It seems like a really stupid, obvious question, but the truth is that 1 is seriously complex. Is it even a number? Number theory pushes and pulls on 1, showing that it’s everything all at once — yet sometimes it’s powerless. Cube it, multiply, divide it… whatever you do, it’s the unity.
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There are infinite ways to write the number 1 without even using a 1. But what’s the simplest way to write 1 using all 10 digits 0 to 9? You can do it with exponents, square roots, multiplication and division… really, anything goes. But the easiest, least-complicated way to get all 10 digits into a
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Of all the numbers, why is THIS one so weird? Multiply it and you’ll get the same re-arranged digits, or leave it on its own — which happens to coincide with the repeating value of 1/7… It shouldn’t be like this. Why is this happening? WHY IS 142,857 SO SPECIAL? #vsauce #education #math
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Was “alogon” unsayable because it was a mathematical Voldemort, or because the concept of irrationality was so difficult to express? Probably a little bit of both. Hippasus’s fate is a mix of legends, with some saying he was drowned at sea by the will of the Gods after discovering irrationality, and others suggesting he angered
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The Egyptians didn’t know the Pythagorean Theorem, but they figured out a way to make perfect 3-4-5 right triangles using segments of rope. It’s so common sense, unsophisticated, and elegant that it’s an example of a proof without words AND mathematical beauty. #shorts
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Just think of all the questions that arise when a seemingly-healthy baby dies. Was there an illness that went undetected? Was there a rare genetic defect that couldn’t possibly have been known? Are any signs of physical trauma related to the resuscitation efforts of a fragile infant, or something more sinister? Every time a baby
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Subscribe to our Curiosity Box! http://www.curiositybox.com/bogo Add the Summer Box to your cart, use code BOGO, and get the summer box FREE! FOLLOW ME: Tweets by tweetsauce https://www.instagram.com/electricpants/ LINKS TO LEARN MORE: BOOKS: Metametaphysics (Eds. Chalmers, Wasserman) An Introduction to Metametaphysics (Tahko) Material Beings (Peter Van Inwagen) Objects and Persons (Trenton Merricks) Ordinary Objects (Amie
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Nicomachus wrote “Introduction to Arithmetic” nearly 2,000 years ago, but he also seems to have come up with the first mathematically-based mind blows in Syria. Given the average person’s understanding of mathematics at that time, who WOULDN’T think Nicomachus was a wizard? #shorts
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🔺 #shirt #shorts 🔺 join our brain food club to get it! http://www.curiositybox.com I’ve been working on a new Vsauce1 video for the last few months — I always seem to pick topics that take A LOT of research … and I love it 🙂 It’d be rad if I made quicker videos, but then
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Get the Vsauce Curiosity Box: https://www.curiositybox.com/vsauce2 Probability is one of the clearest, more straightforward disciplines within mathematics. Unfortunately, almost nothing in mathematics is murkier and more misleading than… probability. WHAT?! Belgian mathematician Maurice Kraitchik posed a simple question about wagering wallets, and in doing so he revealed a paradoxical mismatch between a raw, indisputable math
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Tossing the iron filings from our magnetic zen garden at one of its magnets to visualize the field lines of magnet force. https://www.curiositybox.com/ “How do you clean the iron off the magnet?” Good question. I would say that learning to accept the limits of your will is part of the meditative process. I would also
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Borrow $10, but only take $5. Then your friend will owe you $5, and you’ll owe your friend $5, and it’ll cancel out… except for the original $5 he’s already given you. RIGHT?! And that’s the $5 logic trap. #shorts
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Get the Vsauce Curiosity Box: https://www.curiositybox.com/ The transitive property is ingrained in our thinking. It gives our brains a simple, straightforward way to process the world — especially with numbers. If one thing is better or more valuable than another, and that second thing is better than a third, you KNOW that the first one
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It seems impossible that you can turn your back on a roll of three dice, then ask some math questions to determine the exact roll and exact order of the dice. But you can do this perfectly EVERY TIME and look like a super-genius when you pull it off. #shorts
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Main episode: https://youtu.be/ohtrjw0JPK8 Meet the wide array of talented YouTube creators & makers we relied on to explore the complex world of sound and hearing (and the other scientific concepts throughout this season). Rikki Poynter: https://youtube.com/user/rikkipoynter 12tone: https://youtube.com/c/12tonevideos Benn Jordan: https://youtube.com/c/BennandGear Electroboom: https://youtube.com/c/Electroboom
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If Pinocchio’s nose when he lies, what happens if he says, “My nose grows now?” If he’s telling the truth, his nose won’t grow. But if it doesn’t grow, and he’s just said it will, then he’s lying. Pinocchio’s nose only grows when it doesn’t grow? WHAT? #shorts
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Guest Star Rikky Poynter: https://www.youtube.com/user/rikkipoynter 12tone: https://www.youtube.com/channel/UCTUtqcDkzw7bisadh6AOx5w Shhhhh… Years after an alien invasion, Jake (me) quietly ekes out a meager existence while avoiding the sound-sensitive alien race that’s hunting him. Although every sound *could* spell disaster, it provides the perfect opportunity to explore what is sound, what it means to hear, and if we can
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Guest Starring iJustine: https://www.youtube.com/user/ijustine Harris Heller: https://www.youtube.com/user/harrisheller Emily Graslie: https://www.youtube.com/c/EmilyGraslie/featured Life finds a way…Jake (that’s me!) is enjoying a relaxing vacation at Jurassic Park when something goes terribly wrong and the dinosaurs escape their cages. With the prehistoric beasts running rampant, the race is on to get to the last boat off the island…and see
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