Field Bulletin · Electromagnetism

The Electricity Museum

From static sparks to the power grid — how we tamed the most fundamental force in the universe. Build circuits, visualize fields, and trace 2,600 years of discovery.

Hero · Live Circuit

Circuit Playground

Place wires, batteries, resistors, LEDs, and switches on the breadboard. Ohm's law (V = IR) and Joule's first law (P = IV) update live; close the loop and current starts to flow.

V: 9.0 V I: 0.00 mA P: 0.00 mW Ready
9.0 V
1.0 kΩ
Section 02 · Timeline

26 Centuries of Electricity

From 600 BC (Thales rubs amber) to the 2020s (grid-scale lithium and solid-state battery research).

Section 03 · Field

Electric Field Visualizer

Place positive and negative charges to see electric field lines computed in real time — Coulomb's inverse-square law applied at every pixel. Drag charges to move them.

Field lines flow from + to −. Where they bunch up, the field is strong; where they spread out, weak. The same lines describe both forces and energy density.

Section 04 · Playground

Hands-on Instruments

Compare AC and DC waveforms, calculate power from voltage and current, and decode resistor color bands.

AC DC
60 Hz
170 V