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What is quantum tunneling?

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Transcript: http://www.davidcolarusso.com/... video is an adaptation of an earlier piece of mine--Perspective on quantum mechanical tunneling. That film, however, was designed for a unique audience, and I felt its overall length was limiting its appeal here. So I've repackaged it as one of my weekly postings. I Hope you enjoy. People have been asking for the math. So here it is. The Sun's core temp is ~13.6 MK. For hydrogen nuclei the Coulomb barrier is roughly 0.1 MeV. This corresponds to a temperature in excess of 1 GK! Luckily, tunneling and the distribution of speeds among nuclei lower the actual temperature required. So without tunneling even the Sun's core isn't hot enough for fusion. To see most of this worked through, check out this link: http://burro.cwru.edu/Academic... a less mathematical explanation, try: http://en.wikipedia.org/wiki/N... Transcript: http://www.davidcolarusso.com/... Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcolarusso.com/...

Channel: Howto & Style
Uploaded: November 30, 1999 at 12:00 am
Author: dcolarusso

Length: 04:11
Rating: 4.73
Views: 207318

Tags: energy  fusion  measurement  mechanics  physics  potential  quantum  reality  star  tunneling  uncertainty  

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Video Comments

Maxbw1177 (November 30, 1999 at 12:00 am)
Hey, been looking into magnetism lately and cant understand how it works, apparently it is caused by an electron spinning but what about an electron spinning creates force? perhaps you might know?
FilmPA (November 30, 1999 at 12:00 am)
DO YOU WANT SOME FLOWERS?
FilmPA (November 30, 1999 at 12:00 am)
CRAYON TOOTHPASTE
togglenuts (November 30, 1999 at 12:00 am)
KILLA NUTSACK
descryIAm (November 30, 1999 at 12:00 am)
And the Universe is the result taking into account all things that are seen and unseen. When we understand all things, it's then we'll be able to see the obstacles we must go around, without destroying anything, but realizing everything has a purpose. Peace isn't something to be achieved, because it already exists. It man's challenge to understand it, and bring it about. The galaxy is already in harmony, its us who aren't. Peace, understanding, and reality is our to discover. Do we want it?
descryIAm (November 30, 1999 at 12:00 am)
There is nothing that we can create. We can only discover what was already there. Believing is seeing and achieving what was already. We are bound, grounded, or chained by the idea that we can't accomplish but a few things in our time. He who dares to dream the biggest doesn't get bogged down with the details but shares his dreams and delegates to others in ways to bring the dreams to reality. Our options are endless. Like the moves of the pieces on a chess board. Life is imagination. a Universe
SilentBud420 (November 30, 1999 at 12:00 am)
thats what consoiusness is allready..
jaydubs12345 (November 30, 1999 at 12:00 am)
Imagine a pure, honest, eternal form of consciousness with a never exhausting ability to create.It can and will be done!Jay W Callihan
jaydubs12345 (November 30, 1999 at 12:00 am)
This in turn would eventually eliminate the need for human, living flesh, the need to reproduce and sustain human life. All of the effort and energy expended just to support the human body would be utilized to intensify the all-shared ever lasting knowledge.Of course, a constitution would need to be drafted in order to prevent any misuse or abuse of the knowledge. It would have build in full-proof safety interlocks to prevent any mal inentions.
jaydubs12345 (November 30, 1999 at 12:00 am)
Elightening video! Quantam physics, reality, human consciousness:I do not know everything about everything however I do know that people are out there that know far more than I do.Here is what I would like to have happen and would not be offended to recieve partial credit for its coming about:I would like to have created a means of all human consciouness to somehow be connected with one another and shared. A pure state of knowledge that would build on itself.

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