How a Crookes radiometer works

A Crookes radiometer is driven by a thermal gas effect, and not "light pressure" as often thought.  I demonstrate the radiometer in a vacuum chamber and explain its optimal running pressure.
http://en.wikipedia.org/wiki/Crookes_radiometer

Catalytic cigarette lighter

Demonstration of a New Method catalytic cigarette lighter:  The device uses a platinum catalyst to generate heat from methanol vapors, which in turn ignites the vapor.

Tire sealant chemistry and tire pressure monitors

Demonstration of how tire sealant works and how it can damage tire pressure sensors.

Car engine science: Ignition timing, emissions, mixture

I describe how ignition timing and air/fuel mixture affect car engine power, emissions, and driveability.

High pressure gas cylinder transfer

I transfer high pressure ethylene gas from a rental cylinder to another cylinder that I own.  I use a cooling water bath to condense the ethylene and transfer as much mass as possible.