Classification of photon:
Subclass of photon:
| Symbol | Units | Value | Description | |
|---|---|---|---|---|
⇕ |
λ | m | Wavelength of photon | |
⇕ |
λ | nm | ||
⇕ |
λ | Å | ||
⇕ |
λ | a0 | Bohr radii | |
⇕ |
λ | |||
⇕ |
f | Hz | Frequency of photon | |
⇕ |
f | kHz | ||
⇕ |
f | MHz | ||
⇕ |
f | GHz | ||
⇕ |
f | |||
⇕ |
τ | s | Oscillation period of photon | |
⇕ |
τ | ns | ||
⇕ |
τ | fs | ||
⇕ |
τ | |||
⇕ |
E | J | Energy of photon | |
⇕ |
E | eV | ||
⇕ |
E | keV | ||
⇕ |
E | MeV | ||
⇕ |
E | |||
⇕ |
E | Ry | Rydbergs | |
⇕ |
E | Eh | Hartrees | |
⇕ |
E | u | Unified atomic mass units | |
⇕ |
E | kJ/mol | Molar energy | |
⇕ |
p | kg m/s | Momentum of photon | |
⇕ |
p | eV/c | ||
⇕ |
k | rad m-1 | Angular wavenumber of photon | |
⇕ |
ν | cm-1 | Linear wavenumber of photon (spectroscopic wavenumber) | |
⇕ |
Tλmax | K | Temperature of a black body with peak wavelength corresponding to photon | |
⇕ |
Tλmax | °C | ||
⇕ |
Tλmax | °F | ||
⇕ |
Tνmax | K | Temperature of a black body with peak frequency corresponding to photon | |
⇕ |
Tνmax | °C | ||
⇕ |
Tνmax | °F | ||
⇕ |
Tidealgas | K | Temperature of an ideal gas molecule with average kinetic energy equal to photon (E = 3⁄2 kbT) | |
⇕ |
Tidealgas | °C | ||
⇕ |
Tidealgas | °F | ||
⇕ |
Tvibrational | K | Vibrational temperature (E = kbT) | |
⇕ |
Tvibrational | °C | ||
⇕ |
Tvibrational | °F |
| yotta | Y | 1024 |
| zetta | Z | 1021 |
| exa | E | 1018 |
| peta | P | 1015 |
| tera | T | 1012 |
| giga | G | 109 |
| mega | M | 106 |
| kilo | k | 103 |
| hecto | h | 102 |
| deca | da | 101 |
| deci | d | 10-1 |
| centi | c | 10-2 |
| milli | m | 10-3 |
| micro | μ | 10-6 |
| nano | n | 10-9 |
| pico | p | 10-12 |
| femto | f | 10-15 |
| atto | a | 10-18 |
| zepto | z | 10-21 |
| yocto | y | 10-24 |