“ The 1928 prize is awarded by the Academy of Science to Professor Richardson for his discovery of the fundamental physical law known as the "Richardson law," which governs the motion of electrons emanating from hot bodies. ”

“ It is also in the public domain in other countries and areas where the copyright terms of anonymous or pseudonymous works are 93 years or less since publication.
This work may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works. ”