title: First discovered in 1895, the Canadian media rediscover x-rays in 1979.
mesh_terms: D002170:Canada; D049672:History, 19th Century; D049673:History, 20th Century; D011829:Radiation Dosage; D011839:Radiation, Ionizing; D011859:Radiography / Q000266:history; D011861:Radiography, Dental; D014965:X-Rays