US$ 535.00
field lines
Mounted Zener diode on a transparent base with 4mm color-coded sockets and a printed circuit diagram
Thermally isolated 150mL aluminum reservoir inside a polystyrene-lined jacket
Demonstrates electromagnetic switching on a base with 4mm plug connections
Shows oxygenated and deoxygenated blood paths between heart chambers and alveolar surfaces through seven hand-painted removable parts designed with medical-professional input
Ring and Ball Apparatus with Stand Glass Bottles_BOD Bottles field linesStand mounted ring and ball thermal expansion apparatus, dropping freely through the ring when cool but stopped by the ring once flame heating expands the ball.
US$ 535.00
US$ 955.00
US$ 120.00
US$ 59.95
US$ 26.00
US$ 140.00
US$ 620.00