X-rays simply explained : a handbook on the theory and practice of radiography (1903)
Howgrave-Graham, Robert Pickersgill, 1880- · London : Percival Marshall & Co · leaf 90
is 2x2* that is 8minutes. Mr Lewis Wright gives the followingfigures for the exposure required for different <»1»;though in any given case there is nothing for it hut .1, figures being given only as a rough guide. 1 in. spark coil—Hand 20 minutes.,, „ Coins in purse 10 minutes. A haml may h»… … Radiograph of a Hand. Exposure 20 seconds in accordance withthe results <>f the trials shown in Elate II., where the centrestrip shows the best combination of contrast and detail Allconditions the same as for Plate II. \-i:\vs simply EXPLAINED. For the tool or ankle \ three times what Lb…
X-rays · Cathode rays · Fluorescence
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