Monday, July 15, 2013
Styrofoam beads are shown at the base of plastic panels in an efficient solar greenhouse built for a school in Albuquerque New Mexico..., 04/1974
<p><img style="float:left;margin: 0 20px 10px 0" src="http://www.hobbybliss.com/wp-content/uploads/2013/07/97b957b6bf_7065968589_b37108517c_n.jpg" /><strong>Original Caption:</strong> Styrofoam beads are shown at the base of plastic panels in an efficient solar greenhouse built for a school in Albuquerque New Mexico. The beads are blown between the panels at night for insulation and are sucked out during the day to allow light to pass through,
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment