Planck constant
What Planck constant means in Physics A-Level, as defined for AQA, OCR.
Definitions of Planck constant
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Reference: AQA
The constant of proportionality between the energy of one photon and the frequency of the radiation, denoted h.
The constant used with frequency to calculate photon energy in the equation E = hf.
The constant h in E = hf, with value 6.63 × 10⁻³⁴ J s.
The quantity h in the de Broglie equation λ = h/p.
Topics that use Planck constant
- Particles, antiparticles and photons (AQA A-Level)
- The discovery of photoelectricity (A-level only) (AQA A-Level)
- Photons (OCR A-Level)
- Wave–particle duality (OCR A-Level)
Related terms
- Photon
- Photon energy and frequency
- Photon model
- Quantisation of energy
- Annihilation
- Annihilation energy calculations
- Antiparticle
- Atomic spacing
Using Planck constant in the exam
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