Search:

peace peacemakers peace movement peace ideas peace rallies peace marches

What is quantum tunneling?

Creating Peace Videos
Creating Peace Videos Creating Peace Videos
Creating Peace Videos

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: 4.72
Views: 190696

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

Video Url:


Embed Code:

Video Comments

Fishmungaloyd (November 30, 1999 at 12:00 am)
There is only natural phenomena,you numbfucks have no credible evidence for god yet you say for certainty that it exists you kindergardnfucks estupid creationist
defm1 (November 30, 1999 at 12:00 am)
I think Einstein was right when he said god doesn't play dice. A particles exact position and velocity may elude us but when god wants to know such information I highly doubt he consults his quantum theory text book:-)
Shimizoki (November 30, 1999 at 12:00 am)
That is directed to Shanshou4. Shimi=n00b. cant place a reply properly
Shimizoki (November 30, 1999 at 12:00 am)
ahh an appeal to add ignoratiam... if one cannot prove they are right, they must be wrong. One of my personally favorite fallacies, it shows the stupidity of some people. the exact principle you just implied could be reversed on yourself. Just because one isn't able to comprehend the vast complexities of the expansive outreaches of the universe does not mean that they don't exist. (I know that last statement makes little sense. but it sounded cool xD)
Shanshou4 (November 30, 1999 at 12:00 am)
There is only Creationism, you numbfucks never been to the edge of the Universe yet you say for certainity that space is infinite you kindergardnfucks estupid atheist
Emrajbari (November 30, 1999 at 12:00 am)
It is true. Clasically, the protons cannot overcome and penetrate the barrier caused by mutual electric repulsion.
Kryton87 (November 30, 1999 at 12:00 am)
Thats a much more interesting question, and based on this video it would seem so. However, without additional sources it would be impossible to answer with any certainty. I am not a scientist yet, but I do intend to get a book about quantum physics, and find out. It would be quite awesome to eventually become a theoretical physicist, or perhaps a not-so-theoretical physicist. After all, Teleportation, Invisibility, Time Travel, science fiction is only a type 2 impossibility.
eselseepunk (November 30, 1999 at 12:00 am)
If quantum mechanics is an accurate theory(and experimentation suggests it is), then truly all events, *even* the light from the sun, are caused by quantum mechanics. One event isn't caused by quantum mechanics and another by something else. We can't have two different universes, one for fusion and the other for light and heat reactions.
kalaboukas (November 30, 1999 at 12:00 am)
I mean that we know that the sub s energy thus heat and light is produced by nuclear fusion. Here it s shown as if quantum mechanics like the phenomenon of tuneling is the actual catalyst of the sun s nuclear fusion. Is that really, mathematically proven? Not just a theory? Cause this is really wow...
Kryton87 (November 30, 1999 at 12:00 am)
quantum mechanics apply to everything equally. The light production of the sun is not caused by quantum mechanics, it is a byproduct of an event which Is caused by quantum mechanics. As far as whether its proven or not that quantum mechanics apply to the sun and its properties, why would such theories exist if they were not to be used?

Creating Peace Videos © 2007 All Rights Reserved.