Cloud Forming Apparatus

A fun way to duplicate atmospheric conditions in the upper air during cloud formation. This set consists of a special glass flask with side opening fitted with rubber hose, pinch cock and large thick walled rubber bulb. Hold a small amount of water in the bulb and when it is compressed while the side tube is open, air is forced from the flask. Fill the flask with smoke by holding the inlet near a lit match and release bulb. Trap the smoke in the flask with the pinch cock. Then, by compressing and suddenly releasing bulb, dense cloud forms in flask. You can create a dense cloud over and over again simply by squeezing and releasing the large rubber bulb. Under high pressure, air can hold a greater amount of water vapor than it can under less pressure. When the pressure is lowered suddenly, the excess vapor condenses and forms tiny droplets around each smoke particle. Complete Instructions included.

A preview of the included instructions can be found at the bottom of this listing.

Measurements are approximate.

Bulb color may vary with availability.