US$ 118.99
Diffraction grating mounted on a 90 x 40mm card slide
Glass tube 33 inches long with a cork piston riding on a stable wooden base
Alnico Grade III bar pair at 75 x 15mm with steel keepers in a cardboard box
and spectroscopy investigations
sweat glands
Electric Field Shape Demonstration Apparatus Physics_Heat & Thermodynamics Diffraction grating mounted on aDesigned 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.