US$ 169.50
Pocket-sized 45mm aluminum compass with a graduated dial
75-inch aluminum-and-steel frame for mass-comparison work
Open-frame demonstration DC motor exposing armature
green) and three secondaries (cyan
Thermally isolated 150mL aluminum reservoir inside a polystyrene-lined jacket
Melde's Vibrating String Apparatus Chemistry_Molecular Model Sets Pocket-sized 45mm aluminum compass withFor introducing standing waves, this Melde's vibrating string apparatus pairs an oscillator driven string with a mass tray that adjusts tension to determine wavelength, period, and amplitude.
US$ 169.50
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