Directions
- 1Put a sponge inside a cup.
- 2Soak the sponge with 99% isopropyl alcohol.
- 3Place a piece of black paper on the bottom.
- 4Seal the cup's edges with sticky tack.
- 5Set the cup on dry ice.
- 6Shine a flashlight inside the cup to see the particle paths.
Ingredients
- 99 percent rubbing alcohol
- 1 aluminum foil
- 1 black paper
- 1 sponge
- 1 dry ice
Equipment
cupspongealuminum foilblack papersticky tackflashlightdry ice