It was then ratified in 1948 by the 9th CGPMProceedings of the 9th CGPM, 1948, page 54 (French) which adopted a new name for this unit, the candela. In 1967 the 13th CGPM removed the term "new candle" and gave an amended version of the candela definition, specifying the atmospheric pressure applied to the freezing platinum: The candela is the luminous intensity, in the perpendicular direction, of a surface of square metre of a black body at the temperature of freezing platinum under a pressure of newtons per square metre.13th CGPM Resolution 5, CR, 104 (1967), and Metrologia, 4, 43–44 (1968).
It was then ratified in 1948 by the 9th CGPMProceedings of the 9th CGPM 1948 page 54 (French) which adopted a new name for this unit the candela In 1967 the 13th CGPM removed the term "new candle" and gave an amended version of the candela definition specifying the atmospheric pressure applied to the freezing platinum The candela is the luminous intensity in the perpendicular direction of a surface of square metre of a black body at the temperature of freezing platinum under a pressure of newtons per square metre13th CGPM Resolution 5 CR 104 (1967) and Metrologia 4 43–44 (1968)