Note on the Expansion Characteristics of Glasses for Sodium Vapour Lamp Seals

JSGT 1941 V25 T159-T163

The paper describes the thermal expansion characteristics of the individual glasses required to give a composite glass in sodium vapour discharge lamps, and indicates that the mechanical strength of the sheathing glass is an important factor in successful construction.

J. E. Stanworth, M.Sc.Tech.