Observations of Venus at 3.15-CM Wave Length.

The observations of radiation from Venus at 3.15-cm wave length on 34 days in May-June, 1956, are described. The apparent black-body temperature for Venus derived from the measurements changed from about 620 1 110 K (m.e.) in early May to about 560 1 73 K (m.e.) near inferior conjunction. Two single observations at 9.4-cm wave length are described, which suggest that the radiation follows a thermal spectrum.