Bureau of Standards Journal of Research · 1931 · 21 citations · 0 references
Natural SciencesChemistryMaterials ScienceMetallurgyRadiation DetectionSpectroscopyPhotochemistryRadiation SpectroscopyBlack-body RadiationFreezingLight Exposure StandardsPhotometric AnalysisRadiation Testing StandardsStandardsThermal Radiation Standards
A source of light sufficiently reproducible to serve as a fundamental photo- metric reference standard has been obtained by carrying out the original sugges- tion of Waidner and Burgess to immerse a hollow inclosure in a bath of molten platinum and to make observations during the period of freezing.