La aplicación logística conecta la convección de fluidos, la activación de neuronas, el conjunto de Mandelbrot y mucho más. Bienvenidos al Caos. Una vez que descubras esta ecuación nada volverá a ser igual. Entonces ¿ya conoces la constante de Feigenbaum?
Al mirar el diagrama de bifurcación, puedes notar que se parece a un fractal.
Las características a gran escala parecen repetirse en escalas cada vez más pequeñas. Y, efectivamente, si nos acercamos, veremos que, de hecho, es un fractal.
Podría decirse que el fractal más famoso es el conjunto de Mandelbrot.

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Video Original en Inglés: This equation will change how you see the world
https://www.youtube.com/watch?v=ovJcsL7vyrk

Animaciones, codificación, e interactivos en este video de Jonny Hyman ?
Prueba el código tú mismo: https://github.com/jonnyhyman/Chaos

Referencias:
James Gleick, Chaos
Steven Strogatz, Dinámica No Lineal y Caos

May, R. Modelos matemáticos simples con una dinámica muy complicada. Nature 261, 459-467 (1976). https://doi.org/10.1038/261459a0

Robert Shaw, El grifo que gotea como un modelo de sistema caótico
https://archive.org/details/Sh....awRobertDrippingFauc

Crevier DW, Meister M. Periodo de duplicación sincrónico en la visión parpadeante de la salamandra y el hombre.
J Neurophysiol. 1998 Apr;79(4):1869-78.

Bing Jia, Huaguang Gu, Li Li, Xiaoyan Zhao. Dinámica de la bifurcación del período doble al caos en los patrones de disparo neural espontáneo Cogn Neurodyn (2012) 6:89-106 DOI 10.1007/s11571-011-9184-7

Un Garfinkel, ML Spano, WL Ditto, JN Weiss. Controlando el caos cardíaco
Ciencia 28 de agosto de 1992: Vol. 257, Número 5074, pp. 1230-1235 DOI: 10.1126/science.1519060

R. M. May, D. M. G. Wishart, J. Bray y R. L. Smith El caos y la dinámica de las poblaciones biológicas
Fuente: Actas de la Sociedad Real de Londres. Serie A, Ciencias Matemáticas y Físicas, Vol. 413, No. 1844, Caos Dinámico (8 de septiembre de 1987), pp. 27-44

Chialvo, D., Gilmour Jr, R. y Jalife, J. Caos de baja dimensión en el tejido cardíaco. Nature 343, 653-657 (1990). https://doi.org/10.1038/343653a0

Xujun Ye, Kenshi Sakai. Un nuevo modelo modificado de presupuesto de recursos para la dinámica no lineal en la producción de cítricos. Caos, solitones y fractales 87 (2016) 51-60

Libchaber, A. & Laroche, C. & Fauve, Stephan. (1982). Periodo de duplicación de cascada en el mercurio, una medida cuantitativa. https://jphyslet.journaldephys....ique.org/articles/jp


Un agradecimiento especial a:
Henry Reich por sus comentarios sobre las versiones anteriores de este vídeo
Raquel Nuno por soportar muchas iteraciones anteriores (incluyendo partes que ella filmó y que fueron reemplazadas)
Dianna Cowern por sugerencias de títulos y diciendo que las versiones anteriores no eran buenas
Heather Zinn Brooks por los comentarios sobre una versión anterior.


Música de:
https://epidemicsound.com "What We Discovered" "A Sound Foundation 1" "Seaweed" "Colored Spirals 4"
https://ve42.co/Artlist "Busy World" "Children of Mystery”
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Durante la guerra fría los Estados Unidos y La Unión Soviética tuvieron que construir silos subterráneos para guardar misiles nucleares que pudiesen ser lanzados en pocos minutos.

Con muchas preguntas visité uno de esos silos de misiles en el desierto de Arizona para descubrir exactamente cómo habrían lanzado un Misil Nuclear.

¿Cómo pudieron hacer para lanzar estos misiles muy rápidamente si lo necesitaban, pero también, evitar ser disparados por accidente? 
Si eso hubiese sucedido se habría aniquilado la vida en la tierra, tal como la conocemos.

Afortunadamente la guerra fría no solo nos causó miedo y un riesgo potencial de destrucción mutua, sino también hizo que la exploración espacial fuera posible.

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Muchas gracias al museo Titan Missile, a Yvonne y Chuck.
http://www.titanmissilemuseum.org/

Imágenes del espacio cortesía de la NASA.

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Longyearbyen en Svalbard es el asentamiento con más de 1000 residentes que está más al Norte.
Mi viaje a Noruega fue financiado por Screen Australia, Film Victoria y Genepool Productions como parte den nuevo proyecto. Más información pronto.

Más información sobre Svalbard aquí- https://wakelet.com/wake/2cf89....30f-e5ea-4f57-b766-a

Música autorizada de www.cuesongs.com “After Catalunya”
Spotify page: https://play.spotify.com/artis....t/2JnQ2AxkaRjlGCNmfk
iTunes: https://itunes.apple.com/gb/ar....tist/emphemetry/id41

Grabado con un dron DJI Phantom 4

Este video es una traducción del video “The Northernmost Town on Earth (Svalbard en 4K)" de Veritasium- https://youtu.be/5NhIRwCq428
Veritasio es el canal de doblaje de Veritasium al español. ¡Suscríbete!

Dirección y edición- Enrique Morán
Traducción- Gaspar Rodriguez
Revisión- Diego Magaña

Doblaje por:
Enrique Morán - Derek Muller

Veritasium fue fundado por Derek Muller - https://www.youtube.com/user/1veritasium
Síguenos en Twitter- https://twitter.com/esveritasio
Video Anterior- https://youtu.be/jIMihpDmBpY

Mars InSight es el primero en detectar actividad sísmica en la superficie de Marte, el primero en medir la velocidad del calor transmitido desde el interior, el primero en cavar casi 5 m hacia dentro del suelo de Marte, el primero en medir los campos magnéticos en la superficie de Marte y el primero en usar un brazo robótico para colocar instrumentos en la superficie de Marte.

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Animaciones cortesía de la NASA.

Guión y rodaje con Raquel Nuno

Edición y gráficos por Ignat Berbeci

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Este material increíble lo podemos encontrar en la fabricación de diversas cosas, desde chalecos antibalas hasta las paredes del Pentágono, la fuerza de la poliurea proviene de sus moléculas de cadena larga. SUSCRÍBETE ahora para ver todos nuestros videos:
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Con mis amigos del canal de YouTube "How Ridiculous” lanzamos una sandía desde una torre de 45 metros.
Por supuesto que se hizo pedazos al estallar contra el suelo luego de una caída libre de 3 segundos, donde la sandía aceleró a más de 100 kilómetros por hora.

Después rociamos otra sandía con un recubrimiento de polímero y la volvimos a arrojar.
No podrán creer el resultado.

Echa un vistazo al canal How Ridiculous: http://bit.ly/VeHowRidiculous
Moléculas magnéticas de Snatoms: http://bit.ly/VeSnatoms
Un agradecimiento especial a South Bay Line-X: http://southbaylinex.com/
Filmado por Prashanth Venkataramanujam
SFX A Shell in the Pit

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Pequeños robots activados por campos magnéticos podrán usarse en futuros procedimientos biomédicos.
SUSCRÍBETE ahora para ver todos nuestros videos: http://bit.ly/Suscribirse_Veritasium_en_español

Muchas gracias a:
Dr. Eric Diller, Profesor Asistente de Ingeniería Mecánica en la Universidad de Toronto
http://microrobotics.mie.utoronto.ca

Investigaciones referidas en este video:

T. Xu, J. Zhang, M. Salehizadeh, O. Onaizah y E. Diller, robots flexibles a escala milimétrica con magnetización tridimensional programable y movimientos. Science Robotics 4, eaav4494 (2019).
https://robotics.sciencemag.or....g/content/4/29/eaav4

H. Xie, M. Sun, X. Fan, Z. Lin, W. Chen, L. Wang, L. Dong y Q. He, Enjambre de microrobots magnéticos reconfigurables: transformación multimodo, locomoción y manipulación. Science Robotics 4, eaav8006 (2019).
https://robotics.sciencemag.or....g/content/4/28/eaav8

G. Hwang, A. J. Paula, E. E. Hunter, Y. Liu, A. Babeer, B. Karabucak, K Stebe, V. Kumar, E. Steager y H. Koo, robots catalíticos antimicrobianos para la erradicación del biofilm. Science Robotics 4, eeaw2388 (2019).
https://robotics.sciencemag.or....g/content/4/29/eaaw2

Música de Kevin MacLeod http://incompetech.com "Marty Gots a Plan" "March of the Spoons"
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El eclipse total de sol que tuve la oportunidad de presenciar en Madras, Oregón, ocurrió el 21 de agosto del 2017 y la experiencia fue maravillosa.
Cuando la luna pasó frente al sol, el día se transformó en noche y reveló la corona solar, deslumbrándonos a todos los presentes.

Hay quienes dicen que no debes fotografiar tu primer eclipse solar y quizás tengan razón. Estaba concentrado en obtener la exposición adecuada para poder ver las perlas de Baily y el anillo de diamantes, además de asegurarme de capturar la corona y las llamaradas solares. Esto fue un poco estresante pero estoy encantado con los resultados.

El último eclipse solar total fue el 2 de julio de 2019. Se pudo ver totalmente en ciertas regiones de Argentina y Chile. En el resto de Sudamérica se vio parcialmente.

Quiero agradecer especialmente al Dr. Teagan Wall por compartir esta experiencia conmigo y a Raquel Nuno por inspirarme a venir a Oregón.

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#eclipsesolar

Este es el primer video de ciencias de Veritasio. Este video trata sobre uno de los conceptos más fundamentales en la ciencia: la idea que todas las cosas están hechas de átomos, pequeñas partículas que están en movimiento perpetuo. Se atraen unos a otros cuando los separa una pequeña distancia y se repelen cuando se estrujan.

Este video es una traducción del video "Atomic Theory" de Veritasium- https://www.youtube.com/watch?v=U2g1H...

Veritasio es el canal de doblaje de Veritasium al español. ¡Suscríbete!

Dirección y edición- Enrique Morán
Traducción- Diego Magaña

Doblaje por:
Enrique Morán - Derek Muller

Veritasium fue fundado por Derek Muller - https://www.youtube.com/user/1veritasium

Video anterior- "Jeringa de Fuego" - https://www.youtube.com/watch?v=2PSd1...

Hola amantes de la ciencia, aquí les presentamos los mejores momentos de Veritasium en Español del 2019. SUSCRÍBETE para ver todos nuestros videos: http://bit.ly/Suscribirse_Veritasium_en_español

Puesto 10
0:06 Lanzallamas vs Aerogel https://youtu.be/uPWjFWruFkQ

Puesto 9
1:06 3 Efectos Desconcertantes de la Física https://youtu.be/duPJ3Ha0OFs

Puesto 8
2:01 Me volví Impermeable utilizando AEROGEL https://youtu.be/xpkvtAZV9CM

Puesto 7
3:05 ¿Podemos Nadar en Bolas de Sombra? https://youtu.be/6FjUXWL2424

Puesto 6
4:01 Tablero de Fuego - ¡Llamas Danzantes! https://youtu.be/Jq8T4IW1q4g

Puesto 5
4:49 Cómo Retrasar el Envejecimiento o incluso Revertirlo https://youtu.be/j7bYLCzmCwk

Puesto 4
5:34 Un Recubrimiento que vuelve todo Indestructible https://youtu.be/yVjGX5lkZP0

Puesto 3
6:44 Exploración en MARTE InSight - Próxima Misión MARS 2020

Puesto 2
8:02 Micro Robots Magnéticos https://youtu.be/7u7zkAeQhjE

Puesto 1
9:11 ¡Fuego en Gravedad Cero! https://youtu.be/grlAf67JjIo

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How does a transistor work? Our lives depend on this device.
Support Veritasium on Patreon: http://bit.ly/VePatreon
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When I mentioned to people that I was doing a video on transistors, they would say "as in a transistor radio?" Yes! That's exactly what I mean, but it goes so much deeper than that. After the transistor was invented in 1947 one of the first available consumer technologies it was applied to was radios, so they could be made portable and higher quality. Hence the line in 'Brown-eyed Girl' - "going down to the old mine with a transistor radio."

But more important to our lives today, the transistor made possible the microcomputer revolution, and hence the Internet, and also TVs, mobile phones, fancy washing machines, dishwashers, calculators, satellites, projectors etc. etc. A transistor is based on semiconductor material, usually silicon, which is 'doped' with impurities to carefully change its electrical properties. These n and p-type semiconductors are then put together in different configurations to achieve a desired electrical result. And in the case of the transistor, this is to make a tiny electrical switch. These switches are then connected together to perform computations, store information, and basically make everything electrical work intelligently.

Special thanks to PhD Comics for awesome animations: http://bit.ly/16ZXcVY

And thanks to Henry Reich and Vanessa Hill for reviews of earlier drafts of this video.

Music: Kevin MacLeod (incompetech.com) Decisions

A head-vaporizing laser with a perfect wavelength detecting sub-proton space-time ripples.
Huge thanks to Prof Rana Adhikari and LIGO: http://ligo.org
Here's how he felt when he learned about the first ever detection: https://youtu.be/ViMnGgn87dg

Thanks to Patreon supporters:
Nathan Hansen, Donal Botkin, Tony Fadell, Saeed Alghamdi, Zach Mueller, Ron Neal
Support Veritasium on Patreon: http://bit.ly/VePatreon

A lot of videos have covered the general overview of the discovery of gravitational waves, what they are, the history of the search, when they were found but I wanted to delve into the absurd science that made the detection possible.

When scientists want one megawatt of laser power, it's not just for fun (though I'm sure it's that too), it's because the fluctuations in the number of photons is proportional to their square root, making more powerful beams less noisy (as a fraction of their total). The smoothest mirrors were created not for aesthetic joy but because when you're trying to measure wiggles that are a fraction the width of a proton, a rough mirror surface simply won't do.

Filmed by Daniel Joseph Files

Music by Kevin MacLeod, http://www.incompetech.com "Black Vortex" (appropriately named)

Music licensed from Epidemic Sound http://epidemicsound.com "Observations 2" (also appropriately named)

Stained glass is thicker at the bottom - so is it a liquid? Earth's mantle enables plate tectonics, so is it a liquid?
Check out Audible: http://bit.ly/AudibleVe
Sign up for the mailing list: http://www.veritasium.com
Pitch drop experiment: http://www.thetenthwatch.com

Thanks to Meg Rosenburg for scripting and animation, Raquel Nuno for filming and Aaron White for script consultation.

Epigenetics means women have different active x-chromosomes in different cells. Animation courtesy of http://wehi.tv
Music by Amarante: http://bit.ly/VeAmarante
Animation: Etsuko Uno
Art and Technical Direction: Drew Berry
Sound Design: Francois Tetaz & Emma Bortignon
Scientific Consultation: Marnie Blewitt
Courtesy of Walter and Eliza Hall Institute of Medical Research: http://wehi.tv

When a female embryo is four days old it consists of just 100 cells. At this point the x-chromosome from Mom and the one from Dad are both active. But in order for proper development to occur, one of the x chromosomes must be switched off.

Through a tiny molecular battle within each cell, one of the x-chromosomes wins and remains active while the loser is deactivated.

This is done by wrapping the DNA tighter around proteins, modifying histone tails, and DNA methylation - molecular markers to indicate this DNA should not be read.

What's surprising is that it's pretty random which x chromosome wins - sometimes it's Mom's and sometimes it's Dad's. So when a female is just 100 cells big, her cells have a mix of active x-chromosomes, some from Mom and some from Dad.

Lift is an important concept, not only in flying but also in sailing. This week I'm talking to Olympic Sailor, Hunter Lowden. But before I get to the physics of sailing I thought I would explain lift since it's generally poorly understood.

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Music by Nathaniel Schroeder
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All the large-scale structure in the universe may owe its existence to nothing.
Sponsored by the Dyson 360 Eye Robot #ad: http://bit.ly/2cGqBRV
Support Veritasium on Patreon: http://bit.ly/VePatreon

Thanks to Patreon supporters:
Bryan Baker, Donal Botkin, Tony Fadell, Saeed Alghamdi

Let's see how clearly I can explain this. We think of empty space as, well... empty, the epitome of nothingness. But as our understanding of physics has evolved we have realized that it's not truly empty. Space is filled with fields. There is a field for every subatomic particle. One for electrons, up quarks, down quarks, neutrinos and so on. In empty space these fields are basically zero, flat, nil. But it's impossible to make them perfectly zero so there are always some quantum fluctuations in the fields, even in a perfect vacuum. These are sometimes called virtual particles but they should really just be thought of as little disturbances in the field. Vacuum fluctuation play a role mediating the interactions of subatomic particles but they don't really have an impact on the large-scale structure of the universe, EXCEPT during inflation, right after the big bang when the universe increased in size 10^26 times. Due to this rapid expansion, those tiny fluctuations were blown up to the scale of the observable universe. And we know this by looking at the cosmic microwave background radiation where we can see slightly hotter and cooler parts of the early universe that correspond to density fluctuations. And it is these density fluctuations that allowed matter to clump together into large structures like the gigantic gas clouds that would go on to contain stars and planets. In case the video isn't clear, this is what I've been trying to say.

Animations by Gustavo Rosa

This video was sponsored in part by Dyson #ad

These are the molecular machines inside your body that make cell division possible. Animation by Drew Berry at the Walter and Eliza Hall Institute of Medical Research. http://wehi.tv

Special thanks to Patreon supporters:
Joshua Abenir, Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen

Support Veritasium on Patreon: http://ve42.co/patreon

Every day in an adult human roughly 50-70 billion of your cells die. They may be damaged, stressed, or just plain old - this is normal, in fact it’s called programmed cell death.

To make up for that loss, right now, inside your body, billions of cells are dividing, creating new cells.

And cell division, also called mitosis, requires an army of tiny molecular machines.DNA is a good place to start - the double helix molecule that we always talk about.

This is a scientifically accurate depiction of DNA. If you unwind the two strands you can see that each has a sugar phosphate backbone connected to the sequence of nucleic acid base pairs, known by the letters A,T,G, and C.

Now the strands run in opposite directions, which is important when you go to copy DNA. Copying DNA is one of the first steps in cell division. Here the two strands of DNA are being unwound and separated by the tiny blue molecular machine called helicase.
It literally spins as fast as a jet engine! The strand of DNA on the right has its complimentary strand assembled continuously but the other strand is more complicated because it runs in the opposite direction.
So it must be looped out with its compliment strand assembled in reverse, section by section. At the end of this process you have two identical DNA molecules, each one a few centimeters long but just a couple nanometers wide.

To prevent the DNA from becoming a tangled mess, it is wrapped around proteins called a histones, forming a nucleosome.
These nucleosomes are bundled together into a fiber known as chromatin, which is further looped and coiled to form a chromosome, one of the largest molecular structures in your body.
You can actually see chromosomes under a microscope in dividing cells - only then do they take on their characteristic shape.

The process of dividing the cell takes around an hour in mammals. This footage is from a time lapse. You can see how the chromosomes line up on the equator of the cell. When everything is right they are pulled apart into the two new daughter cells, each one containing an identical copy of DNA.
As simple as it looks, this process is incredibly complicated and requires even more fascinating molecular machines to accomplish it. Let’s look at a single chromosome. One chromosome consists of two sausage-shaped chromatids - containing the identical copies of DNA made earlier. Each chromatid is attached to microtubule fibers, which guide and help align them in the correct position. The microtubules are connected to the chromatid at the kinetochore, here colored red.
The kinetochore consists of hundreds of proteins working together to achieve multiple objectives - it’s one of the most sophisticated molecular mechanisms inside your body. The kinetochore is central to the successful separation of the chromatids. It creates a dynamic connection between the chromosome and the microtubules. For a reason no one’s yet been able to figure out, the microtubules are constantly being built at one end and deconstructed at the other.
While the chromosome is still getting ready, the kinetochore sends out a chemical stop signal to the rest of the cell, shown here by the red molecules, basically saying this chromosome is not yet ready to divide
The kinetochore also mechanically senses tension. When the tension is just right and the position and attachment are correct all the proteins get ready, shown here by turning green.
At this point the stop signal broadcasting system is not switched off. Instead it is literally carried away from the kinetochore down the microtubules by a dynein motor. This is really what it looks like. It has long ‘legs’ so it can avoid obstacles and step over the kinesins, molecular motors walking the other direction.

Studio filming by Raquel Nuno

The nutrient content of food is declining. Is it because of soil depletion, selective breeding, or... something else?
Watch my new documentary, VITAMANIA: http://ve42.co/vita

I came across this story as I was making the film Vitamania. When you ask sellers of vitamins why you should take vitamin supplements even if you eat a healthy diet, they will say because our food doesn't contain all the nutrients it once did. This is supposedly due to soil depletion, cold storage, food ripening off the vine, and global transport of out-of-season foods. And to an extent this is true. Foods contain the greatest amount of nutrients if they are eaten soon after they are harvested. An unexpected source of nutrient decline is the increasing amount of carbon dioxide in the atmosphere. It causes plants to grow faster and bulk up on carbs but at the expense of other nutrients, so in percentage terms the amount of nutrients are actually declining. For now this decline is modest so supplementing with vitamin pills is probably unnecessary for most people with a healthy diet but it may be a concern in future.

Thanks to Kate Pappas & Chris Kamen for writing, producing and filming this video with me
Edited by Lucy McCallum
Sound mix by Wayne Hyett
Fact Checking by Calvin Lee and Claire Smith
Thanks to the Collingwood Children’s Farm and Glenn Fitzgerald from the University of Melbourne & Agriculture Victoria

Further Reading:

https://www.sciencedirect.com/....science/article/pii/
https://www.ncbi.nlm.nih.gov/p....ubmed/15637215/?ncbi
http://soils.wisc.edu/facstaff..../barak/poster_galler
https://www.politico.com/agend....a/story/2017/09/13/f
http://www.abc.net.au/news/201....8-05-24/scientists-w

Boredom makes you more creative, altruistic, introspective, and helps with autobiographical planning.
This video was sponsored by LastPass: http://bit.ly/2wAsdUu

I feel like this video might come across as condescending but the person I'm really talking to is myself. Despite the fact that I know how useful it can be to be bored, I still find myself trying to fill every last moment with stimulus. Boredom is unpleasant - the open, unstructured thinking that can take place can also feel pointless. But now I'm made this video to remind myself how important boredom is so hopefully I'll make more time to be bored.

More resources:

The boredom leads people to shock themselves study:
Just Think: The challenges of the disengaged mind
https://wjh-www.harvard.edu/~d....tg/WILSON%20ET%20AL%

Boredom leads people to consider their future and set goals study:
Back to the future: Autobiographical planning and the functionality of mind-wandering
https://www.sciencedirect.com/....science/article/pii/

On boredom and altruism:
https://pdfs.semanticscholar.o....rg/ca72/0f959d3c9c31

Does boredom make us more creative?
https://www.tandfonline.com/do....i/abs/10.1080/104004

Amazing filming by Raquel Nuno

Music from http://epidemicsound.com "I Think I Was There" "Critical Thinking 2" "Wide Open" "Seaweed" "A Sound Foundation 1"

Music also by Kevin MacLeod http://incompetech.com "Fig Leaf Rag"

In 2018 the kg will be defined by Planck's constant, not a hunk of metal.
Try a free book from Audible for 30 days http://ve42.co/audible
Special thanks to the staff at NIST who made this possible: Darine Haddad, Jon Pratt, Stephan Schlamminger, and Ben Stein.

Additional footage and animations by Sean Kelley, Jennifer Lauren Lee, and Frank Seifert.

I have been obsessed with measurement for a long time and I'm not sure quite how it happened. The world's roundest object played a role in this. I guess I'm just fascinated by how difficult it is to pin down a quantity like a kilogram. A physical object seemed like a good idea until the mass of the international prototype kilogram wasn't as constant as expected. These methods of the Kibble balance and silicon sphere have shown better precision than 20 parts per billion, making them superior to the old method. The agreement between Avogadro approaches

Special thanks to Patreon Supporters:
Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen

Support Veritasium on Patreon: http://ve42.co/patreon

Interferometer video by TSG Physics: https://www.youtube.com/watch?v=j-u3IEgcTiQ

Music from http://epidemicsound.com "ExperiMental1" by Gunnar Johnsén

Studio filming by Raquel Nuno

This is what the world would look like if you could see invisible air currents, temperature gradients, and differences in pressure or composition of the air.
Support Veritasium on Patreon: http://ve42.co/patreon

Special thanks to Patreon Supporters:
Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen

I first saw a Schlieren imaging setup around ten years ago in Melbourne. I was immediately fascinated by the way I could see the warm air coming off my hand. I hadn't expected the currents to be moving that fast or to be so visible. This was a tricky setup to get right because alignment is very important and here I'm just working with what I had lying around the house mostly (plus the mirror). For the best Schlieren photography, making sure the mirror is stable is essential. I want to improve my setup so the mirror doesn't wobble back and forth too much creating the pulsing light and dark sections of this video.

The relationship between index of refraction of air and temperature, pressure, humidity and wavelength is complicated. This website will calculate it for you: http://emtoolbox.nist.gov/Wavelength/Ciddor.asp

Slow motion by Hollywood Special Ops: http://www.hollywoodspecialops.com

Sound Effects by A Shell in the Pit: http://www.ashellinthepit.com

Filmed by Raquel Nuno
Special thanks to Blake Nichols for assistance