Balance for technical porposes Balling's saccarometer Barlow's wheel Baroscope Battery of four Leyden jars Battery of Grenet's piles Beccaria-Faraday's well 1 Beccaria-Faraday's well 2 Bell for sound in vacuum Bell's demountable thelephone Bellows for acoustic experiments Beltram's voltameter Biot's apparatus for superficial distribution of electricity Board for the parallelogram of forces Bodies inertia

Bohnenberger gyroscope Bolometer Bourdon's tube Braun's electrometer Braun's vacuum tubes Braun-Wehnelt's vacuum tube Brewster's kaleidoscope Bunsen's photometer Bunsen's spectroscope