US$ 11.90
Nineteen hardwood three-dimensional geometric shapes in a dovetailed sliding-top case
and frequency-response student work
the fixed-focus lens and embedded scale supporting textile
letting students plot resonance against length and back-calculate the speed of sound
Right-Angled Acrylic Prism, 25mm Length, 35mm Hypotenuse Subcategory_Thermometers Nineteen hardwood three-dimensional geometric shapesCompact right angled acrylic prism at 25mm length and 35mm hypotenuse, the polished 90 45 45 degree faces redirecting light at right angles for total internal reflection demos.
US$ 11.90
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US$ 25.00
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