by Cmglee https://fr.m.wikipedia.org/wiki/Fichier:Blackbody_peak_wavelength_exitance_vs_temperature.svg
By Lookangmany thanks to author of original simulation = Wolfgang Christian and Francisco Esquembre author of Easy Java Simulation = Francisco Esquembre - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=39309437