Physics
Compare ideal Meissner repulsion with an optional field-cooled pinning well. Disturb a levitating magnet and warm the sample through its critical temperature.
Click the magnet to push. Warm above 92 K, then cool again.
Equations Fimage = [1 − (T/Tc)^4] 3μ0 m²/(32π z⁴), T < Tc M z″ = Fimage − Mg − kpin(z − zfrozen) − b z′ M x″ = −kpin(x − xfrozen) − b x′ Above Tc: image force and pinning vanish
Physics
A capacitor-driven rail launcher couples current, changing inductance and armature motion. Inspect force, speed, Joule losses and the complete energy balance in slow motion.
Physics
A reduced Kelvin water-dropper circuit amplifies charge through crossed induction. Explore growth, leakage, energy storage and repeated spark discharge powered by falling water.
Physics
Compare Seebeck generation and Peltier cooling in a constant-property thermoelectric module. Examine load matching, heat flow, Joule loss, coefficient of performance and ZT.