Electric fields, magnetic fields, and electromagnetic waves
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.