joining us from germany, jeffrey kaiser. tell me, are you trying to test the high-speed capabilities of your camera or do you like playing with fire? >> i like to see the details the camera can capture which is not really possible with the naked eye. it's really fascinating to me. >> have you injured yourself yet? >> i looked like i injured my hand but actually 600 per second, that's about 20 times slower than realtime. if you speed that clip up, you would see i got a little hair burn, never got injured. >> aren't you afraid they were going to cause a big fire? >> on that day it was actually a little bit rainy. the grass was a little bit wet and i had a fire extinguisher 20 feet away. >> so you're a professional? >> not really. >> what have your parents said? have they seen this video and said, jeffrey, quit playing with fire. >> when i was small, they didn't like me playing with fire. i showed them the videos and they liked the videos as well. >>> we see videos on this show that say you're never too old to fall in love, you