Puzzels
Kun je wat specifieker zijn? Je praat vanuit gevoel/emotie. Wie is het er niet mee eens? Geef een link of referentie. Anders blijft het koffiehoek babbel.
Indien je echt dieper wil duiken kijk op de Engelstalige wiki: dat is echte spierballen natuurkunde. Gaat te diep erop in dan ik weet.
https://en.wikipedia.org/wiki/Casimir_effect
Voor jouw wils:
Repulsive forces
There are a few instances where the Casimir effect can give rise to repulsive forces between uncharged objects. Evgeny Lifshitz showed (theoretically) that in certain circumstances (most commonly involving liquids), repulsive forces can arise.[51] This has sparked interest in applications of the Casimir effect toward the development of levitating devices. An experimental demonstration of the Casimir-based repulsion predicted by Lifshitz was carried out by Munday et al.[52] who described it as "quantum levitation". Other scientists have also suggested the use of gain media to achieve a similar levitation effect,[53][54] though this is controversial because these materials seem to violate fundamental causality constraints and the requirement of thermodynamic equilibrium (Kramers–Kronig relations). Casimir and Casimir–Polder repulsion can in fact occur for sufficiently anisotropic electrical bodies; for a review of the issues involved with repulsion see Milton et al.[55] A notable recent development on repulsive Casimir forces relies on using chiral materials. Q.-D. Jiang at Stockholm University and Nobel Laureate Frank Wilczek at MIT show that chiral "lubricant" can generate repulsive, enhanced, and tunable Casimir interactions.[56]
Timothy Boyer showed in his work published in 1968[57] that a conductor with spherical symmetry will also show this repulsive force, and the result is independent of radius. Further work shows that the repulsive force can be generated with materials of carefully chosen dielectrics.[58]
