The two major points which this blog is going to highlight are “What is a Galileo thermometer?” and “How to read a Galileo thermometer?”.
As we all know that thermometer is a device which is use to check the temperature precision. And temperature does not always mean that it has to be body temperature. So the question arises what is a Galileo thermometer? In the past when the sun use to hoist up high, no assumptions could be made about the heat and temperature until Galileo Galileo, the very famous physicist invented this thermometer. And so the thermometer still bears his name. Galileo thermometers were invented to measure the air temperature. They are quite different from the other accustomed thermometers. That’s why their shapes and designs are distinct and unique. They are made up of big sealed glass tube (cylinder) with air bubbles blown upwards to the surface of the liquid filled within a glass. They are a bit hard to use. They should be kept away from the reach of moisture, sunlight, heat and air conditioner vents. And the glass cylinder should be wiped off with cloth frequently. The glass bulbs fitted inside the tube should be equally distributed in the top and the bottom.
Now how to read the Galileo thermometers?
When there is a fluctuation in degrees of temperature, the movement of the bubbles of the device is disturbed. Means the bubbles with lower density rises above and the bubbles which are of higher density gets drowned. The reading of the temperature is done with attaching a tag to the lowest floating ball of the thermometer, which indicates the current temperature. The tags on the balls actually define the weights of the balls. When the balls have settled underneath that means the tube is hot and when the balls are at the surface of the tube that means the tube is too cold. Glass Galileo thermometers are more accurate though plastic Galileo thermometers are also available.
