This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
MaxwellBoltzmann zh. MaxwellBoltzmann molecular speed distribution for noble gases Original work by English user Pdbailet based on later version uploaded by user Cryptic and the Chinese translation by user Choihei This is link to the original English version org php title Image AMaxwellBoltzmann Pdbailey Ctyptic Choihei Maxwell