Casimir effect
E590880
The Casimir effect is a quantum phenomenon in which vacuum fluctuations of the electromagnetic field produce a measurable force between closely spaced uncharged conducting surfaces.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
physical effect
ⓘ
quantum phenomenon ⓘ vacuum fluctuation effect ⓘ |
| causedBy |
vacuum fluctuations of the electromagnetic field
ⓘ
zero-point energy ⓘ |
| dependsOn |
boundary conditions of the electromagnetic field
ⓘ
geometry of the conductors ⓘ material properties of the surfaces ⓘ plate separation ⓘ |
| describedBy | Hendrik B. G. Casimir NERFINISHED ⓘ |
| experimentalConfirmation |
precision measurements with parallel plates
ⓘ
sphere–plate geometry experiments ⓘ |
| field |
quantum electrodynamics
ⓘ
quantum field theory ⓘ theoretical physics ⓘ |
| firstMeasuredBy | Marcus Sparnaay NERFINISHED ⓘ |
| forceType | attractive force ⓘ |
| governingConstant |
Boltzmann constant in thermal corrections
ⓘ
Planck constant NERFINISHED ⓘ speed of light ⓘ |
| hasFormula | F = -\frac{\pi^2 \hbar c}{240 a^4} for ideal parallel plates ⓘ |
| hasInterpretation |
change in vacuum energy due to boundary conditions
ⓘ
radiation pressure imbalance of vacuum modes ⓘ |
| hasVariant |
Casimir–Polder effect
NERFINISHED
ⓘ
dynamical Casimir effect NERFINISHED ⓘ thermal Casimir effect NERFINISHED ⓘ |
| limitCondition |
ideal perfectly conducting plates
ⓘ
zero temperature ⓘ |
| manifestsAs | force between closely spaced uncharged conducting surfaces ⓘ |
| mathematicalTool |
mode summation
ⓘ
path integral methods ⓘ zeta function regularization ⓘ |
| namedAfter | Hendrik B. G. Casimir NERFINISHED ⓘ |
| relatedTo |
Lifshitz theory
NERFINISHED
ⓘ
van der Waals forces ⓘ zero-point energy of the vacuum ⓘ |
| relevantTo |
fundamental tests of quantum field theory
ⓘ
microelectromechanical systems ⓘ nanotechnology ⓘ precision force measurements ⓘ |
| scale |
micrometer scale
ⓘ
nanometer scale ⓘ |
| signCanBe | repulsive under certain material and geometric conditions ⓘ |
| temperatureDependence | force magnitude changes with temperature ⓘ |
| typicalConfiguration | two parallel conducting plates ⓘ |
| usedIn |
constraints on hypothetical new forces at short ranges
ⓘ
tests of modifications of gravity at submillimeter scales ⓘ |
| yearProposed | 1948 ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.