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5:02
Richard Phillips Feynman was an American physicist known for the path integral formulation of quantum mechanics, the theory of quantum electrodynamics and the physics of the super fluidity of super cooled liquid helium, as well as work in particle physics (he proposed the Parton model). For his contributions to the development of quantum electrodynamics, Feynman was a joint recipient of the Nobel Prize in Physics in 1965, together with Julian Schwinger and Sin-Itiro Tomonaga. Feynman developed a widely used pictorial representation scheme for the mathematical expressions governing the behavior of subatomic particles, which later became known as Feynman diagrams. During his lifetime and after his death, Feynman became one of the most publicly known scientists in the world.
19 Apr 2012
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9:59
mind opener, thought provoker
2 Mar 2009
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9:55
mind opener
2 Mar 2009
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9:47
mind opener, thought provoker
2 Mar 2009
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9:30
mind opener, thought provoker
2 Mar 2009
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9:34
mind opener, thought provoker
2 Mar 2009
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9:04
A video from the Senior physics Structure of the <b>Atom</b> series describing the earliest <b>atom models</b>. More vids- *******www.shep****/resources/curricular/physics/P30/Unit4/Unit4.html
7 Mar 2009
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8:53
Fermilab theoretical physicist, Dr. Christopher Hill explains what a positron is.
25 Jul 2009
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9:02
Showing how easy and comprehensible physics really is. Even someone in the second grade can take a physics course. From basic arithmetic to relativity and quantum physics. This time we take a look on what an equation is and learn a few more equation solving tricks.
6 Sep 2009
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2:33
On fragmentation
19 Oct 2009
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2:49
The Sadness Of Gods (An Enigma) My dinner date a book, Quantum Enigma, I order a glass of chianti and cranberry teriyaki chicken, as I settle back to read of the possibility of consciousness being met in the tiny world of the sub atomic. There, I come upon these words of Francis Thompson: "Thou canst not disturb a flower without troubling a star...." All the while I read, on a silenced TV, tragedy. Looking up I see cars crashing on a highway from camera views from the highway road, then then from inside the car's cabin. The cars collide sometimes in slow motion the video interspersed with bloodied bodies before the next hulks clash. The scene continues for some time, as Thompson's flower fades from my mind till finally I ask out loud What is this? from where I sit so comfortably with a nice dinner and wine. I think of the physical reality of the TV, and the removed reality of the images it projects, and the false reality of the chroma key effects, and how if it weren't for my looking up none of this would have come into the world, tonight. And then Thompson's stirred flower returns to my mind. And I wonder how many stars were troubled tonight? And I wonder how many really terrible things are happening now, that I do not see, in Darfur, in Sumatra, or next door? Physicists ignore that physical reality doesn't exist till its observed. Why can't I? I wonder how any superior force could so coerce destiny to such disastrous conclusions? Gods need not be benevolent but at least I expect them to be a little bit engaged. These sorrowful things suggest only indifference. Are gods only created after? Born of disaster? Do we carry the potential for gods in us? The images of calamity on TV, flowers stirring. I am a troubled star tonight infinitesimally small in an unimaginably enormous universe yet I carry in me consciousness of it all. A flesh wrapped enigma briefly breeding the sadness of gods.
26 Nov 2009
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12:55
Is it possible for distant galaxies to be moving away from us faster than the speed of light? And if it is would it be possible for us to see them? Surprisingly the answer to both questions is a resounding YES. How is that possible? How can something travel faster than the speed of light? Today we will try and paint an accurate picture of the Universe based on the Lambda-Cold-Dark-Matter model, which is the best cosmological model today. Once we have painted that picture, the answers to our questions will be straightforward.
4 Aug 2010
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4:49
Brief intro to chaos theory. Enjoy ! Info: Chaos theory contends that complex and unpredictable results occur in systems that are sensitive to small changes in their initial conditions. This small changes effect is best illustrated and commonly known as the "Butterfly Effect" which states that the flapping of a butterfly's wings in the Amazon could cause tiny atmospheric changes which over a certain time period could effect weather patterns in New York. Such systems are known as chaotic systems. Although chaotic systems appear to be random, they are not. Beneath the random behavior patterns emerge, suggesting, if not always revealing, order. Such pattern is The Golden Spiral, first discovered by Phythagoras, which is derived from the golden rectangle, a unique rectangle which has the golden ratio - phi. This pattern is observed everywhere in nature such as milk in coffee, the face of a sunflower, nautilus shell, your fingerprints, our DNA, and the shape of our galaxy the Milky Way. I call it God's signature in all of his creation :), order = love.
28 Apr 2011
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0:14
Stephen hawking tells a humorous anecdote about his recent car troubles. *update 2008 jun 14 now with helpful annotation subtitles* *** Now with shameless plug link to my animated film project trailer, seeing as how this video has gotten ridiculously popular :P ***
9 Mar 2012
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2:59
How can light discharge the tinsel?! Try this experiment! Tinsel, a negatively charged PVC pipe, an aluminum cake pan and an ultraviolet light (germ sanitizer) are used to demonstrate the photoelectric effect. In a nutshell, the photoelectric effect is the emission of electrons when a surface is exposed to photons of sufficient energy. Note that the effect is frequency dependent. Electrons will be emitted if the photon frequency equals or exceeds the threshold frequency for the metal. One could shine a 100 watt Helium Neon laser on the aluminum pan without discharging the tinsel. In contrast, when UV photons strike the pan, they are quickly absorbed and readily release electrons. A few tips: PVC pipe works great for giving the tinsel a static charge. Note, however, that not all tinsel will work properly. It must be electrically conductive and light weight. If the tinsel continues to cling to the PVC pipe, it is probably not conductive enough. See "tips and secrets" at the end of the video for further details. Note that this experiment works ONLY when the tinsel is given a negative charge. For best results, place the apparatus on top of an insulating material, such as a thick sheet of plexiglass or rubber. Also note that it was necessary to lightly scrub the surface of the aluminum pan, to expose the bare metal. Going further: Try other metals. Try electrolytes, coatings, various frequencies of light. Ponder how you might use this knowledge to design a solar cell. Share your discoveries! Caution: Overexposure to UV radiation can be harmful to humans! Follow simple safeguards. Music: "Deliberate Thought" courtesy of Kevin MacLeod
20 Mar 2012
215
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0:42
This woman doesn't have a "Guardian angel" protecting her.., she has a "Guardian archangel" protecting her. :)
17 Jul 2012
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