In 1924, the Indian physicist Satyendra Nath Bose introduced the statistics that should be followed by photons and that Einstein demonstrated were also valid for particles of integer spin value. The paper by Bose was initially rejected [1] by the prestigious English journal Philosophical Magazine; he instead wrote to Einstein, translated the paper, and published it in Zeitschrift fur Physik [2]. Einstein then applied Bose’s idea to ideal gases [3] so that nowadays the statistics are known as Bose-Einstein statistics. The basic assumptions made by Bose were that the size of the smallest cell in phase space has a definite value ħ3, that photons are indistinguishable, and that in a single cell an arbitrary number of photons can reside.