“There is nothing noble in being superior to some other man. The true nobility is in being superior to your previous self.” Probably W.L. Sheldon, US lecturer on ethics (1858 – 1907) rather than Ernest Hemingway.
Thursday, 21 November 2013
Tiny 'LEGO brick' -style studs make solar panels a quarter more efficient
Rows of aluminium studs help solar panels extract more energy from sunlight than those with flat surfaces.