Laplace Rail for Magnetic Field Demonstration, 11.75 x 3" Plastic Labware_Plastic Burettes Acrylic bell-in-vacuum jar with an

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

Standard rheostat at 16 ohms and 4A with oxidized constantan winding on a vitreous-enameled steel tube

built to travel between fieldwork sites without damage

Large-format Boyle's Law apparatus with hand pump

this wooden simple-machine model lets students measure input effort against output splitting force at different wedge angles

Laplace Rail for Magnetic Field Demonstration, 11.75 x 3" Plastic Labware_Plastic Burettes Acrylic bell-in-vacuum jar with anOpen Laplace rail with a free moving conductor and 4mm sockets, letting students watch the wire travel along the rail as roughly 3A of current crosses the magnetic field.