[Photographing the invisible: science, occultism, and X rays at the turn of the 20th century].
Julich
S
S
D049672:History, 19th Century; D049673:History, 20th Century; D009781:Occultism / Q000266:history / Q000523:psychology; D010781:Photography / Q000191:economics / Q000193:education / Q000266:history; D011859:Radiography / Q000191:economics / Q000266:history / Q000523:psychology; D012106:Research / Q000191:economics / Q000193:education / Q000266:history; D012108:Research Personnel / Q000191:economics / Q000193:education / Q000266:history / Q000523:psychology; D012586:Science / Q000191:economics / Q000193:education / Q000266:history; D013140:Spiritualism / Q000266:history / Q000523:psychology; D013548:Sweden / Q000208:ethnology; D014965:X-Rays