Addyman, Frank Thornton · London : Scott, Greenwood & co. · leaf 196
e barium platino-cyanide. Theillumination is still visible when the screen is placed directlyagainst the opaque plate, and one is at first disposed to think thatthe plate is transparent. If, however, the screen, lying againstthe plate, is covered with a thick sheet of glass, the fluorescent 1… … Plate VI,—Sarcoma. RADIOGRAPHY. 161 light becomes much weaker, and disappears entirely if, in-stead of the glass, we surround the screen with a cylinder oflead 1 cm. thick, which is closed at one end by the opaqueplate, and at the other by the head of the observer. The effect just described might…
X-rays
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