What is a Galileo thermometer?
A Galileo thermometer consists of a glass tube that is filled with a non-toxic clear fluid with several floating bubbles. The colored bubbles have metal tags attached to them to show the temperature.
How do I read the temperature?
The temperature is determined by the lowest floating bulb. When there is a bulb in the middle, the temperature is between that degree and the lowest floating bulb. If all the bulbs float to the top, the temperature is under the lowest floating bulb. If all the bulbs sink, the temperature is over the highest bulb.
What kind of liquid is in it?
This is filled with 100% Paraffin, it is non-toxic. The main tube has clear paraffin and the colored balls have 3.4% dyed paraffin.
How do I clean up my broken Galileo thermometer?
1. Pick up all the broken glass.
2. Clean the area with warm water and soap (dish soap is fine).
3. Let it dry completely.