US$ 30.99
a sliding front door
Alnico Grade III bar pair at 75 x 15mm with steel keepers in a cardboard box
providing a quick swap-in reference for general-purpose AC-circuit and timing-experiment work
5-inch diameter
Diffraction grating mounted on a 90 x 40mm card slide
Electric Field Shape Demonstration Apparatus Physics_Heat & Thermodynamics a sliding front doorDesigned to make electric field lines visible, this apparatus aligns suspended particles in a liquid medium between charged electrodes to reveal dipole and parallel plate field shapes.