Topic “mark valentine”
FeedItems
-
Steam battery - breath power calculator
Interesting write up from Mark Valentine on his "steam battery" he writes - A few months ago, Forrest M. Mims III, the editor of The Citizen Scientist, received an inquiry from an upper-level physics student that led to a brief (or perhaps not so brief) account of how I discovered the "Steam Battery." Essentially, this is an arrangement that produces a voltage across a sample of black ESD (Electro Static Discharge) foam when human breath is applied to one side of […] read
2008-02-02