“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.
Wednesday, 22 July 2015
Graphene lights bulb
The first on-chip, visible-light source that uses graphene as a filament has been created by an international team of researchers.