The Museum of Science and Art, Volume 3

alarum apparent magnitude appears ascertained atmosphere AUGUSTUS DE MORGAN axis Calais carried centre cloth coil communication conducting wire conductor connected constructed continued copper Corsica degree density deposited depth diameter DIONYSIUS LARDNER direction disc dispatch distance diurnal diurnal rotation Donaghadee Dover earth Edition effects electric current electric fluid Electric Telegraph expedients explained extent Fcap feet firmament galvanometer globe greater gutta-percha heat hemisphere Holyhead hundred inch increased instrument insulation intensity iron laid LARDNER'S MUSEUM latitude length less lever line wire liquid London magnet magnitude manner mean temperature metal miles moon motion needle object observed pass phenomena plane plate polar pole Portpatrick posts produced pulsations quantity radiation railways rendered represented in fig revolves roads rotation round solar spots station strata stratum submarine cable supplied surface suspended telegraphic line temperature terminal station terrestrial thick transmitted transport University College vapour vessel vibration weight wheel zinc