
The SciencesJuly 1, 1943
Ultra-Violet--Near, Middle, Far
Many Industrial and Personal Uses Are Being Made of the Phenomena Surrounding these Radiations

Ultra-Violet--Near, Middle, Far
Many Industrial and Personal Uses Are Being Made of the Phenomena Surrounding these Radiations

Electrical Floriculture
Artificial Light Supplements Daylight, Of Use in Greenhouse or Home, High Lighting Intensities Not Necessary, The Results