US$ 10.00
Diffraction grating mounted on a 90 x 40mm card slide
with thumb-wheel jaw movement for fine dimensional precision
5% ±2 digit accuracy on a 3-1/2 digit LCD
Five-piece giant wooden clothespin set sized at 7
deliberately using non-standard graduations to build empirical reasoning
Thermal Conductivity Star Chemistry Diffraction grating mounted on aFour metal conductivity star with copper, brass, aluminum, and iron rods radiating from a central heated disc, letting students see conduction rate differences in one view.
US$ 10.00
US$ 20.00
US$ 50.00
US$ 20.00
US$ 22.00
US$ 25.00