Casimir Effects - Peter Milonni 

BRILLIANT LESSON! THESE ARE NOT BARE DETAILS . THIS IS VERY IMPORTANT DO POINT OUT AND INTERPRET IN THE RIGHT STYLE. At Uni no time was ever devolved to these clarifications about quantization and I kept forgetting about z.p.e. until I discovered 1+2+3+4+5+....n+... = -1/12 and this gave me a kick to go bakc and think ABOUT +1/2hw .....and that was an infinite and nevertheless we MUST account for it and adapt to wat it means. Thank you Prof. I appreciated a LOT the subtleties of first theorists thinking about quanta.

Perhaps a better Presentation title for this super interesting lecture: ZPE effects or ZP-radiation effects. The Casimir force is just one of the treated ZPE effects. It is often assumed ZP-Energy consists of TEM wave radiation, however, classical Maxwell-Lorentz theory can be generalised to allow for longitudinal electromagnetic wave modes (electric field is longitudinal, magnetic field is scalar, the scalar product of these fields represent a unidirectional energy flow). Such waves could have a different velocity in vacuum, and a have different energy/momentum ratio with respect to the TEM wave. A very important experimental fact is that the Coulomb near field is much faster than the speed of light. Louis de Broglie returned to his original Pilot wave theory at the end of his life and career (the dual wave solution, a subluminal particle 'velocity' wave and a superluminal pilot wave, that are two distinct wave types). Antony Valentini showed by means of computer simulations that the 'deterministic' version of QM, i.e. Bohm's pilot wave theory, is not stable: a statistical non-equilibrium velocity wave -pilot wave interaction does not relax quickly enough to a statistical equilibrium situation. However, De Broglie's Pilot wave mechanics theory is stable in computer simulations (fast relaxation). Born's rule can be expressed in the context of De Broglie's Pilot wave mechanics theory; Born's rule states that a particle is in statistical equilibrium with its pilot wave radiation background. This situation can be generalised to non-equilibrium statistics, such that Born's rule does not hold any more, and this is not longer equivalent with standard QM. This is what I learned from Valentini's papers, but his work does not tell me what Pilot waves are. If such waves are electrodynamic in nature, then we have a possibility for ZP-energy harvesting by means of nonlinear resonant quantum systems that are not in statistical equilibrium with the ZP-E 'pilot wave radiation background'. There is no experimental proof whatsoever for the statement that the ZPE has maximum entropy (cannot be increased), so we might as well assume that it is possible to technically increase the entropy of the ZPE without violating the second law of thermodynamics, or in other words, use ZP radiation energy as an energy source without violating the 2nd law of TD.

Great lecture.

Does anyone know the relationship between aspect ratio of a nanoscopic cylindrical cavity and where the casimir forces become attractive or repulsive? I watched this whole presentation just to get at that and then he brushed over it at the end. Lol.

I have been thinking about mass for a while in conjunction with vacuum fluctuations. I hope you may know the Casimir effect. If we consider the Casimir effect, notice that if there is a force it must be capable of doing work. Thus there is energy in the vacuum.? Now if we think of that force and the energy we notice that it is a consequence of decreasing the fluctuations in a region of space. Thus anything that occupies space has the same effect. Since E equals MC squared, we could identify this effect as associated with the mass of the object that is occupying the space. Have I discovered that the rest mass of an object is due to the space of the object that now has a reduced region of vacuum fluctuations.

Where do I find a link of ppt he use?

14:20 re: Outside influences. How would you shield against cosmic rays?

How does one make a difference between the Kazimir's effect and ordinarily expected Van der Vallace forces between molecules? It was a common knowledge long before Kazimir that highly polished metal plates will stick to each other because molecular forces across the gap.

Great lecture, made even more great by the fact that Dr. Milonni used a hockey stick to teach Quantum Physics. O Canada.

@prophetofthenow how so? what plates?

Very interesting

Just started highschool and so have a limited quantitative understanding so was wondering if there is any physics I should learn except classical mechanics to start learning about the casimir force and quantum mechanics in general ?

Could the Casimir effect be the same as gravity? I mean could the force of the earth being pulled to the sun actually be the force of wavelengths larger than 98 million miles pushing the earth towards the sun?

43:30 I get \frac{\pi^{2} h c}{720 d^3} with 720=8*90 and an extra d from V(d) = -Ad [ ...] Any one show me the way?

Has anyone done experiments with the Casimir effect at the ISS?

The energy thats being produced and repaid if accordance with Heisenberg uncertainty relations is the fabric of space-time.

If i understand the math correctly you should be able to spin cationic plasma at relativistics speeds inside a metal enclousure and use electric charges and magnetism as propulsion with zero inertia against movement.

Because hadrons make the field leptonic mass interactions occur in.. the very flow causes an induction event.

guy in front row is holding his head from exploding 54:40

This could also explain 'dark energy' if more energy is acting on the outside of the strips pushing them in than on the inside pushing out then the universe which contains all the 'zero point' energy (I think its the actual fabric of space-time) pusing out into nothing just like water fills whatever is holding it.

So how do we know this is not just a repeat of the Cavendish experiment?

Comprehensive

so if this "casimir effect " could produce energy how could you harness it ?

Cavendish did not do an experiment. Balls in a shed is not an experiment. What’s the dependent variable? What’s the independent variable?

You'd have to be immensely nerdy to chuckle at the joke he made about the books expanding at the rate of a logarithmic scale lollll

@MattBurton1987 "but there's no violation of relativity because no information is being transmitted" lol (laughed out low).

pliz stop, I'm already dead

Most impressive and looks every bit like Woody Allen.

@MattBurton1987 If laughing at that is not cool, then you can just go ahead and not call me Miles Davis

i wish i could understand this! ...I WILL ONE DAY!!!!

Nicolas Tesla use vacuum energy in his experience. John Bedini is using it in his energizer machine.

casimir effect maybe the very reason of what happens at the bermuda triangle, two plates causing a casimir effect

I'm sure the naysayers love this.

that hockey stick pointing obsession is so distracting

Not a natural communicator for such fascinating material. He sounds about as enthusiastic as someone doing the laundry, not as someone who has truly comprehended a miracle of nature. Boo!

i am so not smart enough to have watched this whole video

meh dyne/cm^2 ??? now physics teachers start to use shit units too ?

@ 2:21 Mr Milonni isn't very well informed about what's published in the physics-community. 7 Years before this video was uploaded (in 2005) Mr Jaffe (from MIT) showed that the Casimir-effect can be FULLY EXPLAINED by classical physics. Bye Mr Milonni.

Oh were to start. Lies, more lies and he did not give consent. I studied under Doctor E.r Frederick and I can tell you this is not ok to use without written consent

FYI That's Richard Feynman NOT Richard Fineman!