1. How To William Tell An Apple
This first video is of a nylon rod being shot through an apple at about 75m/s. If you look closely you can see a compression wave pass through the apple just after the rod first impacts it. (Video not working? Check it out on YouTube.)

2. Knocking Sparks From A Metal Rod
I’ve just finished shooting another high speed video in college - it’s quite long (over 5 minutes!) and it tries to show how metallic sparks behave when grinded from a rod. You’ll either find it boring as hell or fascinating. Here’s the YouTube link, I’ll post it here as soon as I can upload it (college firewalls prevent me from using ftp on campus accomodations). The grinding wheel is spinning at about 2800 and the video was shoot at just over 12000fps.

3. High Speed Compression of Ply Wood PART 1

4. High Speed Compression of Ply Wood PART 2

5. High Speed Compression of Ply Wood PART 3