Chaos theory means deterministic systems can be unpredictable. Thanks to LastPass for sponsoring this video. Click here to start using LastPass: https://ve42.co/VeLP
Animations by Prof. Robert Ghrist: https://ve42.co/Ghrist

Want to know more about chaos theory and non-linear dynamical systems? Check out: https://ve42.co/chaos-math

Butterfly footage courtesy of Phil Torres and The Jungle Diaries: https://ve42.co/monarch
Solar system, 3-body and printout animations by Jonny Hyman
Some animations made with Universe Sandbox: https://universesandbox.com/
Special thanks to Prof. Mason Porter at UCLA who I interviewed for this video.

I have long wanted to make a video about chaos, ever since reading James Gleick's fantastic book, Chaos. I hope this video gives an idea of phase space - a picture of dynamical systems in which each point completely represents the state of the system. For a pendulum, phase space is only 2-dimensional and you can get orbits (in the case of an undamped pendulum) or an inward spiral (in the case of a pendulum with friction). For the Lorenz equations we need three dimensions to show the phase space. The attractor you find for these equations is said to be strange and chaotic because there is no loop, only infinite curves that never intersect. This explains why the motion is so unpredictable - two different initial conditions that are very close together can end up arbitrarily far apart.

Music from https://epidemicsound.com "The Longest Rest" "A Sound Foundation" "Seaweed"

El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.

El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.

New research shows chameleons actively tune nano-crystals to change their color.
For a 10-day free trial, check out http://lynda.com/veritasium
Chameleon research in Nature Communications: http://bit.ly/1FacHO2
"Photonic Crystals Cause Active Colour Change in Chameleons"

This research was carried out by Jérémie Teyssier, Suzanne V. Saenko, Dirk van der Marel & Michel C. Milinkovitch at the University of Geneva Department of Quantum Matter Physics and the Laboratory of Artificial and Natural Evolution (LANE)

Original videos of chameleons are here:
https://www.youtube.com/watch?v=YIRiCwHlUd8
https://www.youtube.com/watch?v=XdQvtP8EKrM
https://www.youtube.com/watch?v=YSH7EmXFMac
https://www.youtube.com/watch?v=egwueh6wj1E

Additional details available at: http://www.lanevol.org/LANE/ch....ameleon_colour_chang
For correspondence: Michel C. Milinkovitch, Laboratory of Artificial & Natural Evolution (LANE), Dept. of Genetics & Evolution, University of Geneva, Switzerland.

The melanin spreading out video is courtesy of Richard Wheeler:
https://www.youtube.com/watch?v=hL0USeWjTHQ
http://www.richardwheeler.net

Special thanks to:
Harry, Jo, Daniella and Raquel for helping me produce and film this video - it looks great thanks to you!

"Si voy a morir, mi bebé vivirá". Con estas palabras, Lorraine Allard, una madre inglesa de 33 años de edad, respondió a los médicos que le plantearon abortar al hijo que esperaba para someterla a un tratamiento de quimioterapia contra el avanzado cáncer que padecía.

http://www.aciprensa.com/puntodevista
El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.
Puntos de vista: ¿Qué puntos debe tener en cuenta un católico (a) si desea contraer matrimonio con una mujer u hombre evangélico?

The strange thing about high jump is that the technique changed dramatically after 1968, when Dick Fosbury used his trademark flop to win the gold medal at the Olympics in Mexico City.
Previously the scissors and straddle had been the most common jumping technique, but after the introduction of safer landing matts, the new unorthodox Fosbury Flop became the jump of choice. There are good physical reasons for this - the style allows the jumper to pass over the bar while his or her centre of mass actually passes below the bar.

Huge thanks to Elly (Appchat http://bit.ly/NxAMlX ) for filming, editing, and music!

numberphile http://bit.ly/numberphile
efit30 http://bit.ly/O4CMme
appchat http://bit.ly/NxAMlX
erikaanear http://bit.ly/MdyUzQ
whoisjimmy http://bit.ly/LtFzpW
minutephysics http://bit.ly/Muh6CC
1veritasium http://bit.ly/MrupzL

Scientists have recently discovered nanodiamonds in the flames of ordinary candles. They are produced at a rate of about 1.5 million per second. Unfortunately they are also burned up at this rate and released into the atmosphere as carbon dioxide. Still this finding may prove useful in the ongoing search for economical ways to produce diamonds.

Common pitfalls of New Year's resolutions and how I plan to avoid them. Thanks Audible! Start listening with a 30-day trial and your first audiobook plus two Audible Originals free when you go to https://audible.com/veritasium or text veritasium to 500500.

Thanks to Simone Giertz for sending me and Every Day Calendar!
Get notified when they're available to order here: http://www.simonegiertz.com/every-day-calendar

Special thanks to Patreon Supporters:
Alfred Wallace, Arjun Chakroborty, Chuck Lauer Vose, Dale Horne, Jasper Xin, Joar Wandborg, Kevin Beavers, Leah Howard, Lyvann Ferrusca, Michael Krugman, Noel Braganza, Ron Neal, Tige Thorman

El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.

El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.

El Papa Francisco destacó la constancia y fidelidad de los sacerdotes y fieles católicos de Lituania durante las persecuciones religiosas emprendidas por los regímenes totalitarios nazi y soviético que ocuparon el país en el siglo XX.
Más información en: https://www.aciprensa.com/noti....cias/el-papa-francis

http://www.aciprensa.com/noticia.php?n=22724
Marcha final del Encuentro Nacional de Mujeres. 17 de agosto de 2008

Este martes diversos medios de comunicación informaron que el Papa Francisco habría “pensado” en la hora de despedirse, especulando sobre una posible renuncia del Santo Padre.
Más información en: https://www.aciprensa.com/noti....cias/el-papa-francis

El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.

In the mid 1800's scientists successfully passed an electric current through a vacuum in a glass tube. They saw a glow from the tube that seemed to emanate from the negatively charged plate called the cathode. Since scientists didn't know what the glow was they called it a cathode ray. There was debate over whether the cathode ray was a wave phenomenon like light or a stream of negatively charged particles. JJ Thomson effectively resolved the debate in 1897 by performing a clever experiment that determined the charge to mass ratio of the particles making up the cathode ray. He also showed that this same particle was in all different cathode materials so it must be a constituent common to all atoms. This changed our understanding of the atom from the previous billiard ball model to Thomson's plum pudding model of the atom.

El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.

Higher: http://bit.ly/blockhigher
Same height: http://bit.ly/SameHeight
Lower: http://bit.ly/BlockLower

Special Thanks to:
Henry (MinutePhysics): http://www.youtube.com/minutephysics
Destin (Smarter Every Day): http://www.youtube.com/smartereveryday
Greg and Mitch (ASAP Science): http://youtube.com/asapscience
Elise Andrew (I F***ing Love Science): http://youtube.com/iflscience

Thanks to everyone at RIT and Dickinson College who helped with the making of this video:
Rochester Institute of Technology
Robert Teese, Katelyn Wilkerson, Andrew Gillie, Andrew Stidwill

Dickinson College
This experiment was the brainchild of David Jackson based on a demo at Princeton.
Priscilla Laws, Catrina Hamilton-Drager, Maxine Willis

High-speed camera support:
Charles Zwemer and Bria Antoine

When a tube spins with an X and an O labelled at either end, why do we see only one letter during the rotation?