X-rays simply explained : a handbook on the theory and practice of radiography (1903)
Howgrave-Graham, Robert Pickersgill, 1880- · London : Percival Marshall & Co · leaf 88
turned on, the subject of course keeping his handperfectly still, and at tho expiration of h minute thecoil is stopped, about 1J in. of the hand at the finger-end is covered by the lead plate, and another half-minute exposure is given. The plate is now movedso as to cover another 1£ in. and a third… … Successive Trial Exposures from 10 to 40 seconds, 9 spark coil.Cossors Bianodal Tube wanned down to 3J alternative spark.Edwards Kathodal Plate (avbole-plate size). Distance betweentube and plate 12. Metul Quinol Developer applied for 20minutes as described in text. [MPLY I ! bo thai ii bridges the…
X-rays · Cathode rays · Fluorescence
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