← THE LADDER

FLASHLIGHT DISCOVERY

The first electrical thing most people ever owned is five circuits in one tube.

0 OF 5 CHAPTERS · MISSION IN PROGRESS
  1. 1 One Loop A flashlight is a battery, a switch, and a bulb, wired in one loop and nothing else. Build that loop and read what a bare tungsten filament actually pulls.
  6. SWITCH LAUNCH WHEN READY
CHAPTER 1 OF 5 · CURRENT

One Loop

A flashlight is a battery, a switch, and a bulb, wired in one loop and nothing else. Build that loop and read what a bare tungsten filament actually pulls.

light-the-lamp

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