René Blondlot

Prosper-René Blondlot (July 3, 1849 - November 24, 1930) was a French physicist who attained notoriety in the early years of the 20th century for his claims to have discovered what he called the N-ray (Rayon-N, the "N" for Nancy-Université), a form of radiation he proposed to be cause of changes in the luminosity of certain bodies, a discovery that was later discredited by Robert W. Wood.