September Challenge - Photoelasticity

We went to a fly-in at a local one runway airport that is used by smaller planes and ultralights. It was a perfect day for the fly-in with combination classic car show, vendors, music and of course, food!

One of he challenges for this week is photoelasticity - and P noticed that this ultralight might work well. She was right - a polarizer is a must to achieve this effect.

Like any air show, there are many wonderful images from today that just finished second to this photoelasticity opportunity.