# Science Challenge

1. Measure the speed of light with a laser pulse. What is your measurement?
2. Color Mixing and spectra. What is the mystery gas?
3. World in UV. What is interesting about a $5 or$20 bill? What color are your teeth in UV?
4. Resonate a wine glass with your voice. Could you break it?
5. Lorentz v x B force. What direction is v x B?
6. Gummy bear incineration and cellular respiration. What gasses come out?
7. Arago Spot. What is the Arago or Poisson spot?
8. lenses and mirrors. Where does light focus in a nearsighted eye?
9. electroshock. What is the difference between the human electroshock demonstration and the hot dog demonstration?
10. Investigate fluorescence. Why don't red or green LEDs write on the phosphor screen?

Brandon, winner of the Science Challenge with prize book.