| C++ FLTK desktop app source code | planck_law_fltk.cpp |
| libgcc_s_sjlj-1.dll from MINGW-W64 [mingw-w64_8.1.0_x86_64_win32_sjlj] | libgcc_s_sjlj-1.dll |
| libstdc++-6.dll from MINGW-W64 [mingw-w64_8.1.0_x86_64_win32_sjlj] | libstdc++-6.dll |
| C++ FLTK desktop app executable SIGNED BY xformulas.net | planck_law_fltk.exe |
| Formulas | planck_law.txt |
| ZIP with ALL the files | 20200424_111033_000036_planck_law_fltk.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 |