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.

Magnetic refrigeration: How does that work?!

I describe how some materials can change temperature when a magnetic field is applied to them.

https://www.kjmagnetics.com/gap.calculator.asp

http://www.sigmaaldrich.com/technical-documents/articles/material-matters/advanced-materials.html

https://www.youtube.com/watch?v=WlKKKMTA7XM

http://www.reddit.com/r/AppliedScienceChannel/

http://en.wikipedia.org/wiki/Magnetic_refrigeration

Cryogenic Machining: Custom rubber parts

I demonstrate the process of cryogenically freezing rubber, then CNC milling it into a custom shape. This avoids the need to injection mold or cast rubber parts.