Economy Ceramic Disc Magnet, 25 x 5mm Racks & Stands_Funnel Stands drawing 4-6V DC through 4mm

drawing 4-6V DC through 4mm sockets for current-versus-lift-force investigations

producing water jets of varying distances to show how pressure increases with depth in hydrostatics

sized to mount alongside a tone generator for converting electrical signals into audible tones during sound-wave demonstrations

the f/3 curvature stretching the focal throw for demos that need the focal point set comfortably beyond the mirror face

Economy Ceramic Disc Magnet, 25 x 5mm Racks & Stands_Funnel Stands drawing 4-6V DC through 4mmEconomy 25 by 5mm ceramic disc magnet, an individually stocked spare from the disc series for physics labs, craft use, and ad hoc experimental setups.