6-Hole Premium Wooden Test Tube Rack with Pins, 9.4", for 25mm Tubes Category_Lab Equipment relating photon frequency to the

relating photon frequency to the kinetic energy of emitted electrons for quantum physics investigations

75 x 2 inch chrome-steel horseshoe puts a stronger gap field on offer than the 4-inch model

used to map the circular field around a current-carrying wire and confirm the right-hand rule

sized to drop different loads into a circuit without rewiring

6-Hole Premium Wooden Test Tube Rack with Pins, 9.4", for 25mm Tubes Category_Lab Equipment relating photon frequency to theHand crafted hardwood test tube rack with six 25 mm holes and six drying pins on a single tier, sized at 9. 4 inches long for chemistry and microbiology classroom stations.