US$ 34.00
and collision experiments
Wooden-frame abacus on a 13
and triangle waveforms from 1Hz to 100kHz at 0-10V peak-to-peak
Beech wood test tube rack holds 12 tubes up to 20mm diameter in a 9-inch frame for organized storage during chemistry and biology experiments
yielding a flatter field profile for plane-of-symmetry demonstrations
Large Magdeburg Hemisphere Plastic Labware_Plastic Burettes and collision experimentsLarge Magdeburg hemispheres demonstrating the force of atmospheric pressure through vacuum sealed halves that resist tug of war separation in classroom scale physics demos.