Herbert Dingle (1890 to 1978) was an English physicist and natural philosopher, who served as president of the Royal Astronomical Society from 1951 to 1953. He is best known for his opposition to Albert Einstein's special theory of relativity and the protracted controversy that this provoked.
He carried on a highly public and contentious campaign to get this conclusion accepted by the scientific community, mostly through letters to the editors of various scientific periodicals, including Nature. Dozens of scientists responded with answers to Dingle's claims, explaining why the reciprocity of the Lorentz transformation does not entail any logical inconsistency, but Dingle rejected all the explanations. This culminated in his 1972 book, Science at the Crossroads in which Dingle stated that "a proof that Einstein's special theory of relativity is false has been advanced; and ignored, evaded, suppressed and, indeed, treated in every possible way except that of answering it, by the whole scientific world." He also warned: "Since this theory is basic to practically all physical experiments, the consequences if it is false, modern atomic experiments being what they are, may be immeasurably calamitous."