US$ 20.50
and 38mm lens holder - an inexpensive starter platform for image-formation experiments
and steel cubes machined to the same 1
Thermally isolated 150mL aluminum reservoir inside a polystyrene-lined jacket
the air gap damping heat loss during measurement
and cytoplasm for classroom cell biology instruction
Simple Machines Block and Tackle Model Physics_Heat & Thermodynamics and 38mm lens holder -Used to investigate force multiplication through multiple pulleys, this wooden block and tackle apparatus lets students count supporting strands and measure how each added pulley reduces effort.
US$ 20.50
US$ 71.35
US$ 110.75
US$ 55.70
US$ 40.75
US$ 22.55
US$ 49.15
US$ 17.73
US$ 17.75
US$ 25.25
US$ 17.65
US$ 156.50
US$ 30.15
US$ 17.55