EDU

The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram. A kilogram isn't what it used to be. Literally. The original name for it was the 'grave', proposed in 1793 but it fell victim to the French Revolution like its creator, Lavoisier. So begins the tale of the most unusual SI unit. The kilogram is the only base unit with a prefix in its name, and the only one still defined by a physical artifact, the international prototype kilogram o...

Check out 2Veritasium! http://dft.ba/-ve2 MinutePhysics has a great video on Milkman, vomiting levitator: http://dft.ba/-vomphysics Jetpacking was awesome fun! Despite the fat lip I had a great time. I think knowing a bit about physics actually helps fly the jetpack. It works on the same principle as a rocket (Newton's 3rd law) but unlike the shuttle, you don't carry your own propellant with you. Instead, water is pumped out of the lake by the jetski at up to 60 litres a second. It is then fi...

Oh, Hey! MinuteEarth! http://youtube.com/minuteearth .........and you can also subscribe to MinutePhysics! http://dft.ba/-minutephysics_sub MinutePhysics is on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nathaniel Schroeder http://www.soundcloud.com/drschroeder Drums by Jason Burger http://masonjarm...

More from our recent chat with cosmologist Sean Carroll. His book about the Higgs Boson is called The Particle at the End of Universe. Check his website for more: http://preposterousuniverse.com/ See loads of videos from our visit to the LHC and other CERN sites: http://www.youtube.com/playlist?list=PL7DEC46BD7058D7BB Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/#!/periodicvideos This project fe...

Temperatures below absolute zero are HOTTER than those above, explains Professor Philip Moriarty. More Daisy pics: http://periodicvideos.tumblr.com/post/45179614982/professor-moriartys-dog-daisy-stars-in-the Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/#!/periodicvideos This project features scientists from The University of Nottingham http://www.nottingham.ac.uk/physics/index.aspx Sixty Symbols...

Negative Pressure Exists! http://bit.ly/TFilQ8 Vsauce's Space Straw: http://bit.ly/XubIm3 Smarter Every Day's Prince Rupert's Drop: http://bit.ly/10VQBGW ViHart's Optimal Potatoes: http://bit.ly/14egJoe Thanks to Questacon for filming! Check out their slow-mo playlist: http://bit.ly/ZoWFGR Science Alert brings science to your news feed: http://on.fb.me/14ehuxA Music by Kevin Mcleod (http://incompetech.com): Pale Rider & The Cannery

What happens when single photons of light pass through a double slit and are detected by a photomultiplier tube? In 1801 Thomas Young seemed to settle a long-running debate about the nature of light with his double slit experiment. He demonstrated that light passing through two slits creates patterns like water waves, with the implication that it must be a wave phenomenon. However, experimental results in the early 1900s found that light energy is not smoothly distributed as in a classical w...

Light is so common that we rarely think about what it really is. But just over two hundred years ago, a groundbreaking experiment answered the question that had occupied physicists for centuries. Is light made up of waves or particles? The experiment was conducted by Thomas Young and is known as Young's Double Slit Experiment. This famous experiment is actually a simplification of a series of experiments on light conducted by Young. In a completely darkened room, Young allowed a thin beam of...

Trains, tunnels, muons and giant guillotines - strange things happen when you travel close to the speed of light. Discussing relativity, time dilation and Lorentz contraction. Watch our first Gamma video at: http://www.youtube.com/watch?v=jlJNsRZ4WxI This video features Professor Mike Merrifield from the University of Nottingham - Mike tweets at https://twitter.com/ProfMike_M Animation by Drew Mokris - http://www.spinnerdisc.com Sounds effects from Freesound.org with thanks to: Dymewiz ad...

What's it like working at CERN and the Large Hadron Collider - and how do you get a job there? Questions many of you wanted asked during our LHC visit! More from our LHC visit: http://www.youtube.com/playlist?list=PL7DEC46BD7058D7BB This video features David Barney and Steven Goldfarb, from CMS and ATLAS respectively. CERN: http://public.web.cern.ch/public/ Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://tw...

New observations seem to settle the question of where cosmic rays come from. Dr Tony Padilla discusses the research. See the paper at: http://arxiv.org/pdf/1302.3307v1.pdf COMMENT FROM TONY: "My comments at 1.30 were a bit hasty. Cosmic rays do not pass through the earth. Most collide in the upper atmosphere. I was actually thinking of the LHC safety debate. If they exist, mini blackholes produced by cosmic ray collisions on earth would slip straight through because the earth isn't dense e...

A paper describing the largest structure in the Universe (a collection of quasars) may cast new light on homogeneity. Largely unedited interviews at http://youtu.be/YIK8luKW3mk (apprx 22 mins). The paper is at: http://arxiv.org/abs/1211.6256 Discussing it here are Mike Merrifield and Ed Copeland. Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/#!/periodicvideos This project features scientists fro...

These are fuller interviews from the main Sixty Symbols video at http://youtu.be/iTKv5LUfITc Featuring Mike Merrifield and Ed Copeland.

En esta clase no estuve sólo. Estuvo echándome un cable @carolinad del canal http://www.youtube.com/user/clipsetvideo Muchas gracias Carol. Me lo pasé genial!!! Si este video te ayuda y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . GRACIAS. #nosvemosenclase :-) Correspondiente a FISICA de 2º de BACHILLER, del tema de ÓPTICA, resolveremos un ejercicio de una LENTE CONVERGENTE, a partir de la distancia del objeto luminoso a la pantalla (4 m) y el dato ...

Si este video te ayuda y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . GRACIAS. #nosvemosenclase :-) Correspondiente a 1º de Bachillerato, resolveremos un ejercicio de física. En este caso, de equilibrio de fuerzas, a partir de un sistema formado por 2 bloques unidos por diferentes cuerdas. Dibujaremos el diagrama del cuerpo libre (DCL) en todos los casos, y aplicaremos el TEOREMA de LAMY (F1/senα=F2/senβ=F3/senγ) dado que las tres fuerzas que actuan ...

Subscribe to Veritasium - it's free! http://bit.ly/YSWpWm As a Canadian-Australian, I have always wondered why it is that Australia has so many venomous animals that can kill you while Canada has virtually none. But it's not just Australia - it seems like all beautiful, warm places are cursed with venomous native species. So I set out to find the truth: why have all these venomous species evolved in the world's best holiday destinations? I asked chemists, visited the zoo, interviewed entomo...

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A tour of the lab where Gabrielle Flinn is doing her research into bumblebees. More about her work soon. Test Tube is a project by video journalist Brady Haran for the University of Nottingham. More at http://www.test-tube.org.uk/ This video was filmed and edited by James Hennessy.

Paul Andersen explains the structure, function and importance of adenosine triphosphate (ATP). He begins by describing the specific structure of the molecule and its three main parts: adenine, ribose sugar, and phosphate groups. He explains how energy can be stored in ATP and released through hydrolysis to ADP and Pi. He shows how the molecule is created in cellular respiration and photosynthesis. He also explains how it is used throughout the cell. He finishes with a brief discussion of...

★ ACESSE: http://www.biologiatotal.com.br ★ FACEBOOK: http://www.facebook.com/biologiajubilut ★ TWITTER: http://twitter.com/Prof_Jubilut ★ CONTATO: sitedojubi@gmail.com

★ ACESSE: http://www.biologiatotal.com.br ★ FACEBOOK: http://www.facebook.com/biologiajubilut ★ TWITTER: http://twitter.com/Prof_Jubilut ★ CONTATO: sitedojubi@gmail.com

Paul Andersen explains pH as the power of hydrogen. He explains how increases in the hydronium ion (or hydrogen ion) concentration can lower the pH and create acids. He also explains how the reverse is true. An analysis of a strong acid and strong base is also included. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License All images are either Public Domain or Creative...

PhET Simulation Gene Machine: The Lac Operon http://phet.colorado.edu/en/simulation/gene-machine-lac-operon In this video Paul Andersen describes the elements of an operon. The promoter allows the RNA polymerase to transcribe the required genes. The operator and repressor regulate the expression of the genes by blocking the RNA polymerase. The genes for a specific task are all located in sequence so that they can all be transcribed at once. He starts be describing how the lac operon c...

Chegamos a nossa décima segunda e última aula de biologia do curso de revisão para vestibular e Enem. Nesta aula, o prof. Zé Rucker encerra o conteúdo da nossa revisão com uma retomada dos conteúdos de fisiologia humana. Aperte o play e bons estudos.

Paul Andersen explains how cells duplicate through the process of cell division. Prokaryotic cells (like bacteria) duplicate through a process of binary fission. Eukaryotic cells (like you) duplicate body cells through mitosis and create sex cells through meiosis. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License All images are either Public Domain or Creative Commo...

Paul Andersen explains how to use mathematics appropriately. He begins by emphasizing the important role that mathematics plays in the life sciences today and in that the future. He describes important mathematical equations in each of the four big ideas. According to the new AP Biology framework the student can justify the selection of a mathematical routine to solve problems. The student can apply mathematical routines to quantities that describe natural phenomena. Finally the student ...

In this video Paul Andersen explains the difference between diploid and haploid cells. He starts with a brief description of the central dogma and how genes code for proteins. He then uses the phenotype of red hair to explain that humans are diploid creatures. He discriminates between diploid somatic cells and haploid sex cells. He finishes with a brief description of different life cycles dominated by haploid and diploid individuals. Intro Music Atribution Title: I4dsong_loop_main.wav A...

Paul Andersen (with the help of PatricJMT) explains why mathematics may be biology's next microscope. Dr. Joel Cohen's Journal article: http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0020439 PatrickJMT on YouTube: http://www.youtube.com/patrickjmt Dr. Tomas Gedeon webpage: http://www.math.montana.edu/~gedeon/ Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atributio...

Paul Andersen explains how populations experience exponential. He begins by address the major players; N (population size) and r (growth rate). He models population growth in rabbits through four generations. He then shows you how to use a spreadsheet and then algebra to predict future populations. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License All images are e...

We drop Rubidium into water - but with Phenolphthalein in the water to act as an indicator. Discussed by Professor Martyn Poliakoff. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://www.nottingham.ac.uk/chemistry/index.aspx Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/...

We use the Vatican's own recipe to re-create the black and white smoke used during the Papal Conclave. The cardinals elected a former chemist as Pope - Pope Francis! Black Smoke = No Pope White Smoke = Pope This video features Dr Darren Walsh. Thanks also to Neil Barnes and Samantha Tang. Correction: at 4:05 it should be "when LACTOSE combines" More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter...

On this Season Two premiere episode of The Spangler Effect, Steve helps you prepare for St. Patrick's Day with a few themed experiments. Watch to learn how to make your own gold pennies to lure those pesky leprechauns into your homemade leprechaun trap. Shop the store - http://www.stevespanglerscience.com/ Buy Green Fizzers - http://www.stevespanglerscience.com/product/green-fizzers Buy other colored Fizzers - http://www.stevespanglerscience.com/product/1156 Subscribe to The Spangler Effe...

On this double feature episode of The Spangler Effect, Steve creates a 9-layer density tower using nine different liquids and seven objects. Subscribe to The Spangler Effect http://www.youtube.com/subscription_center?add_user=thespanglereffect

Si este video te ayuda y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . GRACIAS. #nosvemosenclase :-) Correspondiente a QUIMICA de 4º ESO, relativo a LEYES PONDERALES, estudiaremos el significado de la LEY de los VOLUMENES de COMBINACIÓN o Ley de GAY-LUSSAC, que puede enunciarse como "En cualquier reacción química los volúmenes de todas las substancias gaseosas que intervienen en la misma, medidos en las mismas condiciones de presión y temperatura, es...

Firing a (very old) musket and filming with a (very new) high-speed camera. With thanks to Jim Gamble. Also discussed by Professor Martyn Poliakoff. Ebay auction has ended. Music courtesy of Henrik 'Appe' Johansson. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://www.nottingham.ac.uk/chemistry/index.aspx ...

Here is a new video from us about Radon, including a look at a historic letter and a German cloud chamber! With thanks to the Royal Society and GSI. For those with annotations, the caption at the end for Radon should clearly be Rn, not Ra - sorry! More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://www.nottingh...

Professor Martyn Poliakoff visits Westminster School, where he scored 6 out of 10 on his first chemistry experiment! The Prof gave the annual Tizard Lecture. More at: http://www.youtube.com/watch?v=4CK4WHElb4Q Here is his Nyholm Lecture: http://www.youtube.com/watch?v=3vjHzofEM_A The Prof visits Brady's school: http://www.youtube.com/watch?v=Vt93KZLuAqI More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http:/...

Prof T-shirts: http://dftba.com/product/14y/The-Professor-Shirt The Professor discusses the life and work of war-time chemist Henry Tizard - who went to the same school as him! The duo went to Westminster School. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://www.nottingham.ac.uk/chemistry/index.aspx Perio...

For our updated Palladium video, we are mining the Royal Society archives for the story of its discovery - a tale of money, an asteroid and stolen samples? The discovery was made by William Hyde Wollaston. Royal Society (Romantic Chemistry Exhibition until June 14): http://royalsociety.org/events/2012/romantic-chemistry/ This video features Professor Martyn Poliakoff. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Tw...

Everyone's favourite alkali metal - Caesium - reacts with water. Discussed by Professor Martyn Poliakoff. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos From the School of Chemistry at The University of Nottingham: http://www.nottingham.ac.uk/chemistry/index.aspx Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/ Brady's other channels in...

Si este video te ayuda y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . GRACIAS. #nosvemosenclase :-) La camiseta, de JUEGO de TRONOS, la podeis encontrar en "la tostadora"... http://www.latostadora.com/web/daenerys_targaryen__i_do_not_have_a_gentle_heart/146967 Sígueme en: YOUTUBE http://www.youtube.com/davidcpv FACEBOOK http://www.facebook.com/beunicoos (Me gusta) TWITTER http://www.twitter.com/beunicoos GOOGLE + http://www.gplus.to/unicoos WEB http...

Explicación teórica del contexto (o teoría) de Arrhenius para los ácidos y las bases. Vídeos similares: http://ejercicios-fyq.com/?-QUIMICA- Suscribirse para recibir los últimos vídeos: http://www.youtube.com/subscription_center?add_user=danilubrin Visitar el canal cibermatex: http://www.youtube.com/user/danilubrin

http://ejercicios-fyq.com (Ajuste por el método ión-electrón de una reacción entre los iones cromato y los iones sulfuro, que transcurre en medio básico. Suscribirse para recibir los últimos vídeos: http://www.youtube.com/subscription_center?add_user=danilubrin

Se describen las teorías de formación de enlaces: teoría del enlace de valencia y teoría del orbital molecular. Se inicia la descripción de los tipos de enlaces químicos, específicamente, se describen los principales conceptos relacionados con el Enlace Iónico: electronegatividad, iones, electrovalencia, regla del octeto, entre otros. Se acompaña la descripción de cada uno de éstos conceptos con ejemplos ilustrativos referentes a la formación de enlaces iónicos Tareasplus ahora disponible pa...

Professor Ed Copeland on the latest news to come from the Planck project - talking about the Big Bang and the resulting microwave radiation. More from Planck at: http://www.esa.int/Our_Activities/Space_Science/Planck Ed is on Twitter at: https://twitter.com/ProfEdCopeland Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/#!/periodicvideos This project features scientists from The University of Notti...

It was one of the greatest mysteries in modern science: a series of brief but extremely bright flashes of ultra-high energy light coming from somewhere out in space. These gamma ray bursts were first spotted by spy satellites in the 1960s. It took three decades and a revolution in high-energy astronomy for scientists to figure out what they were. Far out in space, in the center of a seething cosmic maelstrom. Extreme heat. High velocities. Atoms tear, and space literally buckles. Photons fl...

This video explores the most basic question of all: why we explore space? Be sure to experience the visual spectacle in full HD, 1080P. The Mars rover, Curiosity, is the latest in a long line of missions to Mars: landers sent to scoop its soil and study its rocks, orbiters sent to map its valleys and ridges. They are all asking the same question. Did liquid water once flow on this dry and dusty world? Did it support life in any form? And are there remnants left to find? The science that com...

The debate over Pluto's planetary state still rages on... **CGPGrey T-Shirts for sale!**: http://goo.gl/1Wlnd Grey's blog: http://blog.cgpgrey.com/ If you would like to help me make more videos please join the discussion on: Google+: http://plus.google.com/115415241633901418932/posts Twitter: http://twitter.com/#!/cgpgrey Facebook: http://www.facebook.com/pages/Greys-Blog/193301110697381

Astronomer Pete Lawrence has a passion for the sun and solar astronomy. Featuring "astro cat". Follow Pete on Twitter at https://twitter.com/Avertedvision and his website at http://www.digitalsky.org.uk/ Deep Sky Videos website: http://www.deepskyvideos.com/ Twitter: https://twitter.com/#!/DeepSkyVideos Facebook: http://www.facebook.com/DeepSkyVideos Flickr: http://www.flickr.com/photos/68847473@N02/ Videos by Brady Haran

The answer to this question may depend on whether Stephen Hawking was right in his theory that describes how black holes shed mass and eventually decay. Time is flying by on this busy, crowded planet as life changes and evolves from second to second. At the same time, the arc of the human lifespan is getting longer: 67 years is the global average, up from just 20 years in the Stone Age. Modern science provides a humbling perspective. Our lives, indeed even that of the human species, are just...

There was a time when only government agencies had the ability to blast rockets into space, or send missions to worlds beyond our own. These days, countries around the world are preparing to send missions to the Moon. They are joined by a rash of private ventures. Their interest goes beyond exploration. They see a chance to make money, by supplying launch or human transport services, including tourism. Some hope to begin exploiting space resources like energy, or rare minerals. Over 30 pri...

After last week's excitement (see our astronomy sister channel at http://www.youtube.com/DeepSkyVideos for more details), we turn our attention to types of supernova. Featuring Professor Mike Merrifield. Deep Sky Videos on last week's Type II can be found at: http://www.youtube.com/watch?v=_GEyAsaWB4k http://www.youtube.com/watch?v=x5zo5449wHU As usual, here is Mike explaining the Atlas of Creation on his shelf: http://www.youtube.com/watch?v=Dylv1EiMejI Visit our website at htt...

The Crab Nebula - M1 in the Messier Catalogue - is a supernova remnant with an important pulsar at its centre. Here we look at it through Nik Szymanek's telescope and the professionals discuss what's going on in this "real-time explosion", unfolding in space on an epic timescale. Images thanks to Nasa, ESA, etc... And Adam Block (Mount Lemmon SkyCenter/University of Arizona): http://caelumobservatory.com/ - Michael Siniscalchi: http://www.helixgate.net/ - Bob Fera: http://www.feraphotograp...

Did Mars long ago develop far enough for life to arise? If so, does anything still live within Mars' dusty plains, beneath its ice caps, or somewhere underground? In 1964 the Mariner Four spacecraft flew by Mars and got a good look. What it saw looked more like the Moon than the Earth. Then, in the mid-1970's, two lander-orbiter robot teams, named Viking, went in for an even closer look. The landers tested the soil for the chemical residues of life. All the evidence from Viking told us: Mar...

After some early and rather embarrassing problems, the Hubble Space Telescope has transformed our view of deep space. Dr Meghan Gray often works with the HST - and now has her very own miniature version. More from Hubble at http://hubblesite.org/ Deep Sky Videos website: http://www.deepskyvideos.com/ Twitter: https://twitter.com/#!/DeepSkyVideos Facebook: http://www.facebook.com/DeepSkyVideos Flickr: http://www.flickr.com/photos/68847473@N02/ More about the astronomers in our videos: http:/...

This is breaking news (on Earth). It happened millions of years ago in space. We have an as-yet unconfirmed supernova in the galaxy M95. This is not our final M95 video, just a news update. Thanks to Nik Szymanek who imaged the object for us at short notice and in testing conditions (what a nuisance Mars can be). Video features Professor Mike Merrifield and Meghan Gray. Some additional image credits: Fred Espenak: http://astropixels.com ING Messier collection: http://www.ing.iac.es...

Scientists have already identified the likely star which exploded in galaxy M95, causing the supernova SN 2012aw. With thanks to the ESO Large Program on Supernova Variety and Nucleosynthesis Yields Collaboration for sharing their early work. More about the collaboration at http://graspa.oapd.inaf.it/index.php?option=com_content&view=article&id=68&Itemid=93 Also thanks to Rubina Kotak for the image taken at the Gran Telescopio Canarias. Thanks also to Parijat Singh... More at http://www.fl...

Astronomer Dr Meghan Gray on leap years and Julian dates. Meghan is making a "guest appearance" on Numberphile and is more familiar to viewers of our sister channels DeepSkyVideos and Sixty Symbols. See those films at http://www.youtube.com/DeepSkyVideos and http://www.youtube.com/sixtysymbols Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Videos by Brady Haran

Astrophotographer Nik Szymanek's first ever published image was of M57, the Ring Nebula. Messier Playlist: http://www.youtube.com/playlist?list=PLC9FC5F6773B383D5 This video also features Pete Lawrence. More on our expert contributors can be found at: http://www.deepskyvideos.com/pages/contributors.html Deep Sky Videos website: http://www.deepskyvideos.com/ Twitter: https://twitter.com/#!/DeepSkyVideos Facebook: http://www.facebook.com/DeepSkyVideos Flickr: http://www.flickr.com/photos/688...

Read a pre-print of the physics paper here: http://arxiv.org/abs/1208.4629 Music by Kevin McLeod http://incompetech.com Songs: Industrial Music Box, Heavy Interlude, Pale Rider, Decisions. Slow motion photography courtesy of Questacon http://questacon.edu.au The original goal of Veritasium was to show the beauty of science and I think the first minute and a half of this is the closest I've come. This is the last in a series of six videos about slinkies.

Space junk is a real problem. NASA now tracks around 20,000 pieces of debris orbiting Earth, most of them larger than 10cm across. Since the average speed of a collision between orbiting objects is 10 km/s these pieces of trash can cause a lot of damage despite their small size. Scientists in Switzerland have a plan to clean up space junk - it involves creating a 'Janitor Satellite' that will seek out pieces of space junk to drag back into the atmosphere causing them to burn up. This video ...

Si este video te ayudó y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . Gracias!. #nosvemosenclase :-) Correspondiente a 2º de BACHI, resolveremos un ejercicio de física. En este caso, sobre CIRCUITOS ELECTRICOS MIXTOS SERIE-PARALELO y la ley de OHM. Hallaremos la resistencia equivalente del circuito y la intensidad total, para, posteriormente averiguar la intensidades de corriente que ciruclan por cada una de las resitencias que se encuentran en paral...

Si este video te ayudó y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . Gracias!. #nosvemosenclase Correspondiente a 2º de BACHI, resolveremos un ejercicio de física. En este caso, sobre las LEYES DE KIRCHHOFF. Plantearemos, basadas en ellas, las ecuaciones de los nodos y de las mallas correspondientes y resolveremos el sistema de ecuaciones obtenido para hallar las intensidades de corriente del circuito electrico. Puedes echar un vistazo a otros vide...

For many years Professor Seamus Garvey has been dreaming of "energy bags" anchored to the seabed, storing power by converting it into compressed air... And now it has become a reality in the seas off Orkney. We've posted many video following this project - see a playlist of them at: http://www.youtube.com/playlist?list=PL49FAD4E1788AE0C6 Test Tube by video journalist Brady Haran for the University of Nottingham. More at http://www.test-tube.org.uk/

Si este video te ayuda y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . GRACIAS. #nosvemosenclase Correspondiente a 2º de BACHI, resolveremos un ejercicio de física. En este caso, sobre un CIRCUITO ELECTRICO SERIE, compuesto por un generador de corriente continua con una resistencia interna r, conectado a una resistencia R de 11 ohmios. En primer lugar, hallaremos la resistencia equivalente del circuito y la intensidad total a partir de la LEY de OHM. ...

"A is for Ampere" - Circuit Playground Episode 1! Learn all about electronics with Ladyada, ADABOT and special guests! Ampere describes the number of electrons that flow through a circuit in one second. It is named after Andre-Marie Ampere. Learn more: http://www.adafruit.com/coloringbook Credits: Ladyada - Limor Fried Andre-Marie Ampere - Collin Cunningham ADABOT - Collin Cunningham & Phil Torrone, Puppet by Anney Fresh, design by Bruce Yan Music: Tom White & Collin Cunningham Intro a...

How lift actually works: http://www.youtube.com/watch?v=aFO4PBolwFg More with Canadian Olympian Hunter Lowden: http://www.youtube.com/watch?v=6YVOPUkbu6g How does a sailboat work? The standard idea is that the wind pushes the sails from behind, causing the boat to move forward. Although this technique is used at times, it is not the most efficient way to sail a boat (and it means the boat can never go faster than the wind). Lift is the key mechanism driving a boat forwards. As air flows over...

Si este video te ayudó y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . Gracias!. #nosvemosenclase Correspondiente a FISICA de UNIVERSIDAD, resolveremos un ejercicio de MOMENTO de INERCIA en un PLANO INCLINADO. En este caso, nos plantean un cilindro de 2 kg de masa y de 30 cm de radio (momento de inercia I=MR²/2) que tiene una ranura cuyo radio es 10 cm. En ella se enrolla una cuerda que se fija por el otro extremo a la parte superior del plano inclina...

Si este video te ayudó y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . Gracias!. #nosvemosenclase Correspondiente a FISICA de UNIVERSIDAD, resolveremos un ejercicio de POLEAS y MOMENTO de INERCIA. En este caso, nos plantean un sistema compuesto de una polea formada por dos discos de masas y radios conocidos, de los cuales cuelgan respectivamente dos masas de 600 y 500 gramos. Con esos datos, nos piden calcular el sentido de giro, la tension de cada cu...

Logical Gates ( Drawing a Circuit that Corresponds to a Boolean Expression ) - Part 4. Here we look at drawing a circuit that would give a desired boolean expression.

Si este video te ayudó y quieres que unicoos siga creciendo, SUSCRÍBETE, haz click en "Me gusta" y compártelo . Gracias!. #nosvemosenclase Correspondiente a FISICA de UNIVERSIDAD, resolveremos un ejercicio de TEOREMA de STEINER y MOMENTO de INERCIA. En este caso, nos piden calcular el momento de inercia de u cilindro macizo homoegeno de radio R, altura H y masa M respecto de un eje de giro parelelo al eje que pasa por el centro de masas, y a una distancia igual al radio de él. Para ello recu...

Follow Ed's previous nano adventures at: http://www.youtube.com/playlist?list=PL848B80AF74D559E2 Ed Lester's spin-out science company - Promethean Particles - moves from its university home to a new premises - and some VIPS are called in to mark the occasion. Government Minister Kenneth Clarke is among them - though he admits to a limited knowledge of nanoscience.

We're start following the ambitious SHYMAN science project - day one includes high-level talks, technical demonstrations and then some ten-pin bowling! More info at http://www.test-tube.org.uk/SHYMAN/ Test Tube by video journalist Brady Haran for the University of Nottingham. More at http://www.test-tube.org.uk/

Yes, I have made a similar vid before. This is the Australian TV version for the ABC show Catalyst http://www.abc.net.au/catalyst/ Misconceptions About Temperature http://www.youtube.com/watch?v=vqDbMEdLiCs The Mysterious Falling Slinky http://www.youtube.com/watch?v=mAA613hqqZ0 Why Are Astronauts Weightless? http://www.youtube.com/watch?v=iQOHRKKNNLQ And for those of you wanting a more General Relativity based explanation. Don't worry, it's coming.