US$ 55.00
Two pith balls suspended on unspun silk from a brass pillar
Concentrated rheoscopic fluid for mixing into pearlescent water suspensions that reveal currents
magnification
Bulk 10kg of dibasic sodium phosphate heptahydrate (Na2HPO4*7H2O)
and landing pad for quantifying gravitational acceleration and drag from air resistance
Carbon Cycle in Soil Kit for Global Warming and Feedback Loops Chemical_Mineral Oil Two pith balls suspended onCarbon cycle soil kit explores global warming through soil respiration measurement, ecosystem analysis, and climate chemistry investigation.