US$ 120.00
and commutator function from the inside out
25 inches tall with five 4
producing oxygen's characteristic emission lines for spectroscope viewing of atomic-emission and quantum-energy levels
Fine 40-60 mesh iron filings in a 100-gram sprinkle bottle
Solar Energy Kit with Solar Cell, Light Bulb, and Motor Human Anatomy_Human Skeletons & Bones and commutator function from theDemonstrates the full light to electricity to motion chain through a solar cell, a 12V powered lamp, and a motor accessory, letting students trace renewable energy conversion step by step.
US$ 120.00
US$ 34.00
US$ 15.00
US$ 148.00
US$ 110.00
US$ 38.00
US$ 114.00
US$ 100.00
US$ 36.00
US$ 31.00
US$ 116.00
US$ 69.00
US$ 49.00