Scientific Writings of Joseph Henry, Volumen1

acid American Philosophical Society apparatus appears arrangement aurora axis battery bell boiler Cayuga lake circuit coil conductor connected copper current electricity cylinder Daboll trumpet deflagration deflection diminished discharge distance effect electricity elevation engine exhibited fact feeble feet fog-signals galvanometer given greater heard heat helix Hudson hypothesis inch in diameter increased induced current inductive action Institution instrument intensity interposed investigations Lake Lake Erie Lake Ontario length Leyden jar light light-house Light-House Board long wire magnet matter ment mentioned metal miles minutes Mistletoe Mohawk river motion nearly needle neutralize observed obtained opposite direction passed penetrating power phenomena plate poles pressure primary current principles produced Professor Henry quantity reference ribbon river secondary current Seneca lake shock signal siren sound spark spiral steam steamer surface tion tricity trumpet valley velocity vessel waves whistle whole wind zinc