How we see colour.
View full lesson: http://ed.ted.com/lessons/how-we-see-color-colm-kelleher
Physics
This incredible photograph illustrates the movements of a violinist’s bow
Lauren Davis This photograph represents the meeting of two great 20th-century artists. Famed violinist Jascha Heifetz was known for his incredible technical precision, which made him the perfect subject for a series of light paintings by the photographer Gjon Mili. Mili is probably best known for his 1949 series of photographs in which he encouraged Pablo [...]
Why does relativity mean that mass changes with speed?
Esther Inglis-Arkell Everyone knows that relativity plays hell with time, and that it can do a number on space, but what about mass? Why do objects get more or less mass depending on their relative speed? We’re going to give you a quick explanation of why running can make you gain weight. No, [...]
The End of Space and Time?
Robbert Dijkgraaf’s focus is on string theory, quantum gravity, and the interface between mathematics and particle physics, bringing them together in an accessible way, looking at sciences, the arts and other matters. The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectures-and-events/the-end-of-space-and-time Gresham College has been giving free public [...]
Antihydrogen is the antimatter counterpart of hydrogen.
Antihydrogen is the antimatter counterpart of hydrogen. Whereas the common hydrogen atom is composed of an electron and proton, the antihydrogen atom is made up of a positron and antiproton. Antihydrogen began to be produced artificially in accelerator experiments in 1995, but the atoms produced had such “hot” velocities as to collide with matter and [...]
Rainbows and Double Rainbows
The physics of rainbows with Professor Mike Merrifield. 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 videos by Brady Haran
25 Awe-Inspiring Reminders Of Just How Insignificant We Are:Prepare to feel tiny.
One billion stars New view of the blue marble Furthest-ever image of the universe 9 billion pixels of the Milky Way galaxy The view 50 million light years away Panorama of Mars A not-so-dark “dark core” A twister on Mars Saturns storms European panorma at night from the International Space Station The [...]
Tags: aurora, billion, blue marble, Coronal, dark core, Enterprise, European, Galaxies, galaxy, Groundhog, International Space Station, IST, Janus, Kukulkan, light years, Mars, Milky way, Moon, NYC, Orion, Panorama, Pencil nebula, R Sculptoris, remains, Saturn, Saturn's creepy moon, Sun, supernova W44, Temple, Thor's Helmet, twister, UFO, universe, Venus
Laser guided maglev graphite air hockey
Levitating graphite discs can be moved using just light © ACS A graphite disk levitating over a bed of rare earth permanent magnets can be ‘pushed’ around or made to spin using a laser beam, Japanese scientists have shown. The phenomenon can also be used to convert sunlight into movement, offering a possible alternative [...]
27 Science Fictions That Became Science Facts In 2012
We may never have our flying cars, but the future is here. From creating fully functioning artificial leaves to hacking the human brain, science made a lot of breakthroughs this year.
Why Can’t We See Evidence of Alien Life? – Chris Anderson
Stand by for an animated exploration of the famous Fermi Paradox. Given the vast number of planets in the universe, many much older than Earth, why haven’t we yet seen obvious signs of alien life? The potential answers to this question are numerous and intriguing, alarming and hopeful. “Why Can’t We See Evidence of Alien [...]
TOP 10 REASONS Why We Know the Earth is Round
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Eyes and Nebulas, profoundly amazing! A must see!
Credit: The hubble site: www.hubblesite.org
