New Czechoslovakian Signal Glasses

JSGT 1937 V21 T095-T112

The desirable properties are discussed of red, green, blue, and yellow railway signal glasses operating with kerosene, acetylene, and electric lights. The determination of light transmission curves materially assists in the specification of the desired properties, and by this means specifications for the Czechoslovakian railways have been drawn up for green and blue signal glasses defining their transmission limits between 4000 and 7600 Å.

V. Čtyroký & M. Fanderlik