Planck's constant
Energy-frequency ratio constant
Planck's constant is a fundamental physical constant that relates the energy of a photon to its frequency.
It defines the scale at which quantum effects become significant—the boundary where classical physics breaks down and particles behave in discrete, quantized ways.
Symbolized as *h*, it appears throughout quantum mechanics: Planck's constant sets the minimum possible uncertainty in measurements of position and momentum.
Conversion to discrete values
- quantaMinimum energy increments
- photonElectromagnetic radiation unit
- energy levelsGradations of physical vitality
- uncertainty principleConjugate variables resist simultaneous precision
Schrödinger equation · quantum state · superposition · ground state · excited state · emission · absorption · transition
SI energy quantity
- hertzFrequency measurement unit
- wavelengthSpatial repetition interval
- frequencyRate of recurrence
- spectrumContinuous range of values
radiation · oscillation · electromagnetic · spectral · monochromatic · coherence
International system of measurement
- metrologyScience of precise quantification
- precisionAccuracy of measurement
- calibrationAdjusting for measurement accuracy
- standardsAccepted levels of quality
quantization
Conversion to discrete values
- quantaMinimum energy increments
- photonElectromagnetic radiation unit
- energy levelsGradations of physical vitality
uncertainty principle · Schrödinger equation · quantum state · superposition · ground state · excited state · emission · absorption · transition · quantum leap
joule
SI energy quantity
- hertzFrequency measurement unit
- wavelengthSpatial repetition interval
- frequencyRate of recurrence
spectrum · radiation · oscillation · electromagnetic · spectral · monochromatic · coherence
Nobel Prize
Highest academic honor
- German physicistScientist from Germany
SI units
International system of measurement
- metrologyScience of precise quantification
- precisionAccuracy of measurement
- calibrationAdjusting for measurement accuracy
subatomic
Smaller than atoms
molecules · nucleus · microscopic · particles · atomic physics · nanoscale · angstrom
Planck's constantvariable
Prone to fluctuation
dependent variable · parameter · independent variable · unknown · coefficient