Electric fields, magnetic fields, and electromagnetic waves
2 Aug 2026
Right-hand rule and magnetic force calculator — explore how force direction flips with a vector simulator, build a velocity selector, and separate isotopes.
27 Jul 2026
RC circuit calculator for charging and discharging capacitors — find the time constant, series/parallel capacitance, and energy stored in a capacitor.
25 Jul 2026
Faraday's law and Lenz's law explained with three simulators — swing a magnet through a coil, spin an AC generator, and find induced current direction.
23 Jul 2026
Equivalent resistance calculator for series and parallel circuits — combine resistors, break a bulb string, and build a live voltage divider.
25 Apr 2026
Interactive Coulomb's Law simulator — set charge magnitudes, signs, and separation to compute electrostatic force and visualise the electric field.
22 Apr 2026
Interactive Ohm's Law calculator — enter any two of voltage, current, or resistance and compute the third, with a live V–I characteristic graph.
15 Feb 2026
Visualize electric field vectors from point charge configurations.
7 Mar 2018
Charge separation in thunderclouds and the physics of lightning and thunder.
26 Jan 2018
Ferromagnetism, domains, and why only certain elements are magnetic.
6 Dec 2017
Photovoltaic cells, band gaps, and tandem configurations — sunlight to electricity.
30 Oct 2017
The fundamental building block of diodes, transistors, solar cells, and LEDs.