The N-Ray Controversy
Physicist P Blondlot claimed to discover a new form of radiation called N-Rays. The claim was debunked when, during Blondlot’s demonstration of N-Rays, one scientist secretly removed an essential prism from the experiment. However, the experimenters still said that they observed N-Rays. (Correction: In 1903, just eight years after the discovery of the X-Ray, René Blondlot believed he found N-Rays. It did, in fact, turn out to be a false theory.)