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i grew up with a copy of 'the boy electrician' that my father born in 1921 had. it showed how to build an xray machine from 'commonly available' parts. the on
by moylan 15y ago
i grew up with a copy of 'the boy electrician' that my father born in 1921 had. it showed how to build an xray machine from 'commonly available' parts. the only warning was a brief note that long exposure caused blood vessels to break which looked like bruising. though this warning is missing from the 1913 version. i do know that the plans were removed from later 1930ish versions.
i'd say that there were at least 1-2 other experiments that would be discouraged due to health and safety these days.
http://danielwebb.us/projects/pd_tech_books/ http://danielwebb.us/projects/pd_tech_books/
- giardini 15y agoI have a 1940 copy of "The Boy Electrician" given to me as a boy by the librarians when our small-town library closed. It includes a section on X-rays ("[X-ray tubes] usually cost about four dollars and a half.") and shows how to connect the tube to a spark coil, how to make a fluoroscope and how to make photographs with X-rays. No warnings are present! This is a wonderful book because it covers so much ground and the writing and drawings give a physical sense of the topics: static electricity, magnetism, electrochemical cells, induction and capacitance, even semiconductors (cat's whisker detectors and selenium photocells).