You kind of have to see it to believe it – with the Prometheus Device you can shoot flames out of your hands:

In the video he says:

It uses a microcontroller to actuate a servo-controlled valve which is on top of this tank of a butane and propane mixture. It uses an arc generator to generate a spark across the arc gap in front of the burner. It uses a flexion sensor to determine how far back my hand is. The flame intensity corresponds to how far back my hand is.

If you look on this page you can see his notes, schematics and drawings for the Prometheus Device. It shows a good amount of creativity – a little like the main character in the Iron Man movie. Perhaps he will create himself an entire suit eventually.

See also:
- How to build a mini flame thrower
- How car flame throwers work
- How microcontrollers work
- How does the lighter in a BBQ grill work?
- How does a spark plug use voltage to ignite a spark in car engines?
- How grills work