US$ 72.22
Used to demonstrate broad pole-separation effects
Designed to measure Planck's constant through the photoelectric effect
Brass-tube resonance apparatus designed to amplify a struck tuning fork at specific air-column lengths
Taenia solium tapeworm model demonstrates parasitic anatomy
Illuminated solar system model with a socket-lit sun
Wooden Adjustable Organ Pipe, 34.5" Physics_Electricity & Magnetism Used to demonstrate broad pole-separationPolished wooden organ pipe 34. 5 inches long with no fixed pitch, sliding through a full octave from C5 (521Hz) to C6 (1024Hz) for hands on comparison of length to fundamental frequency.