Note 43 — Chapter VI
Reading edition
The following table of the rays penetrating coloured glass has been given by Melloni, in his memoir On the Free Transmission of Radiant Heat through Different Bodies:—
Deep violet53
Yellowish red (flaked)53
Purple red (flaked)51
Vivid red47
Pale violet45
Orange red44
Clear blue42
Deep yellow40
Bright yellow34
Golden yellow33
Deep blue33
Apple green26
Mineral green23
Very deep blue19
Translated in the Scientific Memoirs, vol. i. p. 30.