Wanted: Men to Sell Sunbeams (Nov, 1931)
I suppose this is technically possible if the box contained a Bose-Einstein condensate, but I have my doubts.
Wanted: Men to Sell Sunbeams
PLANS to market sunbeams, containing quantities of healthful ultra-violet rays with vitamines, have been put forward by the University of Cincinnati. The rays are put up in small packages, and are filtered out with quartz or other transparent substances.