Balling's saccarometer Barlow's wheel Battery of four Leyden jars Battery of Grenet's piles Beccaria-Faraday's well 1 Beccaria-Faraday's well 2 Bell's demountable thelephone Bellows for acoustic experiments Biot apparatus for superficial distribution of electricity Board for the parallelogram of forces Bohnenberger gyroscope Bolometer Bourdon tube Braun's electrometer

Brewster's kaleidoscope Bunsen. Photometer Bunsen. Spectroscope