20/03/2010Vita ed energia dal Sole
Arc_Nebbia_Solare_30_105_20
30.105 J.W. Bloemer J.A. Eibling J.R. Irwin, Design of a basin-type solar still, (Battelle Memorial Institute, Columbus, Ohio, 19 may 1964). Step 20: Wooden slats used to hold stainless steel strips in place while rest trough is beeing formed and until glass is installed.