Cylindrical Conductor, 17.5 x 8cm Base Size_8 x 5" Used to introduce digital communications

Used to introduce digital communications

Jumbo-sized for heavier apparatus

a battery-free source of partial vacuum for bell-jar demonstrations without external power

Speed-controlled 6V motor driving two cams pumps four spring-mass systems at any chosen frequency

Fifteen-times enlarged molar shows progressive caries decay through enamel and dentin into the pulp chamber

Cylindrical Conductor, 17.5 x 8cm Base Size_8 x 5" Used to introduce digital communicationsUsed to study charge distribution along a long conductor, this brass cylinder on an ebonite insulated base demonstrates Faraday cage shielding and uniform curvature charge density.