Concave Glass Mirror, 75mm Diameter, 75mm Focal Length Handle Type_Twisted Wire Mounted Zener diode on a

Mounted Zener diode on a transparent base with 4mm color-coded sockets and a printed circuit diagram

0V max for whole-class hands-on work

Nine engraved 10 gram brass pieces and a 10 gram hanger on this slotted weight set

producing distinct audible pitches at varying spin speeds to relate rotational frequency to perceived sound frequency

this pack of premium qualitative filter paper offers medium-speed gravity filtration with a 10-micron pore size at 85 gsm weight

Concave Glass Mirror, 75mm Diameter, 75mm Focal Length Handle Type_Twisted Wire Mounted Zener diode on aConcave glass mirror at 75mm aperture and 75mm focal length, ~3mm thick, the f 1 geometry producing strongly converging beams for vivid magnification and real image demos.