| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 2A30.00 | Surface Tension Propulsion | | |
| 2A30.10 | surface tension boat propulsion | PIRA 1000 | |
| 2A30.10 | surface tension boats | Fi-17 | A crystal of camphor is attached to the back of a small boat. |
| 2A30.11 | surface tension boat | M-224 | Pieces of camphor placed on the edges of a light aluminum propeller cause it to spin on the surface of water. |
| 2A30.12 | surface tension boat | M-226 | How to use alcohol in a surface tension boat. |
| 2A30.13 | surface tension boat | M-225 | Rub a match stick on a cake of soap or attach a piece of camphor and place in water. |
| 2A30.20 | surface tension flea | M-223 | Bits of camphor dart around on the surface of water until soap is introduced. |
| 2A30.21 | surface tension flea | M-227 | A drop of Duco cement will dart around on the surface of water, two drops will play tag. |
| 2A30.30 | mercury heart | PIRA 1000 | |
| 2A30.30 | mercury amoeba | Fi-5 | A watch glass containing mercury and a solution of sulfuric acid and potassium dichromate is touched with a nail. |
| 2A30.30 | mercury heart | M-230 | A globule of mercury is covered with 10% sulfuric acid with a few crystals of potassium dichromate. Touch the mercury with an iron wire to produce rhythmic pulsation. |
| 2A30.31 | mercury amoeba | M-228 | Place a crystal of potassium dichromate near a globule of mercury covered with 10% nitric acid. |
| 2A30.32 | mercury heart | M-229 | Cover a globule of mercury with 10% hydrogen peroxide and add 1% sodium bicarbonate. A yellow film appears on the mercury and breaks down regularly. |
| 2A30.35 | pulsating air bubble | M-231 | An inverted watch glass traps an air bubble over water. Alcohol is introduced at the edge of the bubble through a bent tube at a rate that causes pulsations. |