symbol | meaning | numerical value |
c | light velocity | 299,792,458 m/s |
h | Planck constant | 6.62607015 × 10−34 J/Hz |
k | Boltzman constant | 1.380649 × 10−23 J/K |
T | Temperature of the sun | 5772 K |
| frequency of the color yellow | 520 × 1012 Hz |
| frequency of the color red | 440 × 1012 Hz |
| coefficient of attenuation for frequencies | 4.4 × 10−7 m2/kg |