This article is from 1920. It details how to make a basic carbon-arc lamp.



If you've managed to read down this far, here is a similar bonus project.

You can make a similar emergency light source in the field if you have the following:
- A basic pencil
- A pocket knife
- Some copper wire or jumper cables
- A car battery

All you need to do is split the pencil open and remove the graphite core.
Attach the wire or jumper cables to opposite ends of the graphite core.
Attach the other ends of the wire or jumper cables to the battery.

Viola. Light. The graphite will glow very bright on average for about 15 or 20 minutes before it burns out. It will also get very hot so don't touch it or use it around flammable material.