Description
and friction rods for a full unit on charging
Spring-loaded heavy-gauge steel projectile launcher with a string-release trigger
illustrating additive color mixing
Sized for compact classroom display
Metal Refraction and Reflection Apparatus Prong_3 and friction rods for aMetal built apparatus designed for measuring incidence, reflection, and refraction angles when light crosses a boundary between media of different optical density.
Exchange/Return Notes
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