A physics experiment is described, which allows the experimental verificati
on of the Stefan-Boltzmann law of radiation. The experiment can be easily i
mplemented in high school or college laboratories. A measurement method on
which the experiment is bused has been improved to measure the Stefan-Boltz
mann constant with low cost apparatus and we have found it as a ideal tool
to introduce students to the concepts formulated in physics in the early 19
00's that led to the development of quantum mechanics.