Wooden Pinhole Camera, 6.5" Tall Material_Brass and refraction blocks during ray-box

and refraction blocks during ray-box and spectrometer experiments

providing a measurable projection surface for sizing real images formed by lenses and concave mirrors

Mounted on a precision base

the flywheel light enough to drive by breath for hands-on reciprocating-engine study

producing water jets of varying distances to show how pressure increases with depth in hydrostatics

Wooden Pinhole Camera, 6.5" Tall Material_Brass and refraction blocks during ray-boxA 7 aperture metal plate, ground glass screen, and sliding inner box let students measure how image size varies with pinhole to screen distance, closing to a stored length of 6. 5 inches.