| Java desktop app source code | planck_law_swing.java |
| Java desktop app jar SIGNED BY xformulas.net | planck_law_swing.jar |
| Java desktop app bat | planck_law_swing.bat |
| Formulas | planck_law.txt |
| ZIP with ALL the files | 20200424_111033_000036_planck_law_swing.zip |
| h [J*s] | Planck constant |
| f [Hz] | Frequency |
| c [m/s] | Speed of light |
| k [J/K] | Boltzmann constant |
| T [K] | Temperature |
| Bf [W*m^-2*Hz^-1*sr^-1] | Surface brightness per unit frequency |