Walsh, David · London : Baillière, Tindall and Cox · leaf 51
m the floor-level, soas to raise the glass valve gently to its position, and to fill thelarge reservoir by forcing the air out through the barometer tube. * See paper read at Rontgen Society, January, 1899. 44 THE RONTGEN RA YS IN MEDICAL WORK When no more bubbling of air is to be seen, lower the… … Fig. 21.—Toepler Mercury Pump. the latter and continue the process of lifting and lowering untilthe required exhaust is reached. The higher the degree of theexhaust, the more care is required in filling the reservoir, asby any sudden lift the mercury rushes up with force sufficientto break the…
X-rays · Radiography
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