| Subject | English | Norwegian Bokmål |
| light. | number of photons | fotonantall |
| light. | photon counter | fotonteller |
| light. | photon exitance at a point of a surface | fotoneksitans |
| light. | photon exposure at a point of a surface, for a given duration | fotoneksponering |
| light. | photon flux | fotonfluks |
| light. | photon intensity of a source, in a given direction | fotonintensitet |
| light. | photon irradiance at a point of a surface | fotonirradians |
| light. | photon number | fotonantall |
| light. | photon radiance in a given direction, at a given point of a real or imaginary surface | fotonradians |