Light visible and invisible : a series of lectures delivered at the Royal Institution of Great Britain, at Christmas, 1896
Silvanus P. Thompson's printed version of his 1896 Christmas lectures on light and X-rays at the Royal Institution, published by Macmillan in New York in 1897 for general and student audiences. Line engravings show ray paths as dashed lines through prisms and mirrors, labelled apparatus on stands, hatched cylinders and spinning discs, plus reversed white-on-black plates.
