# How do you read a Galileo thermometer?

## How do you read a Galileo thermometer?

To read the ambient temperature on a Galileo thermometer is very easy. What you have to do is simply look at the lowest ball that is floating while ignoring those tags that had sunk to the bottom of the container. It’s those balls that float or are neutrally buoyant that interest us.

### How does Galileo glass thermometer work?

Galileo thermometers work on the principle of buoyancy, which determines whether objects float or sink. As the temperature changes, the glass balls will either sink to the bottom (temperature rises), or float to the top (temperature falls).

#### What is the liquid inside of a Galileo thermometer?

Hello Caroline, The liquid in AcuRite Galileo Thermometers is 100% paraffin. The colored bulbs are filled with paraffin and 3.4% dye. The liquid is non-toxic.

Where do you put the Galileo thermometer?

You can hang the thermometer inside or outside. The key is to not hold the thermometer in your hands because your hands will warm it up and give a skewed reading. The spheres in the thermometer take a few minutes to float to the correct places. Keep in mind that Galileo thermometers are not super precise.

Do Galileo thermometers contain mercury?

No, there is no mercury in a Galileo thermometer. A Galileo thermometer consists of a vertical glass tube containing water with several different…

## How do you read a water barometer?

Look at the water in the spout of the barometer. If the water holds steady around the middle of the spout, you’ll have good weather. The water should never dip below this middle amount, so it’s the default position of the water. Check to see if the water creeps up the spout.

### Why is the Galileo thermometer used?

The Galileo thermometer, invented by astronomer Galileo Galilei, works mainly on the buoyancy principle. It is used to determine the capability of an object to either sink or float.

#### Do Galileo thermometers lose water?

Since the surrounding air is 70 degrees, we know the water inside the thermometer is also about 70 degrees. The blue and yellow bubbles (60 and 65 degrees, respectively) are calibrated so that they have higher densities than the water at this temperature, so they sink.

Is the liquid in a Galileo thermometer flammable?

The liquid paraffin inside the thermometer is flammable, so do not store the thermometer near an open flame. If the thermometer breaks, open the windows in the surrounding area to aid in ventilation and do not allow children or pets to drink the liquid.

How do you fill a Galileo barometer?

Storm Glass Barometer Setup 1) Fill a container with water — use distilled water to help prevent streaks on the glass. 2) Add food coloring to the water to make it easier to see. 3) Push the injection tube onto the syringe (shown below). 4) Fill the syringe with the colored water.

## How do you fill a Goethe barometer?

On a day with average air pressure, fill the barometer about halfway with boiled or distilled water. This helps to avoid limescale stains inside the glass. The water level inside the spout and the glass should be approximately the same.

### What is a Galileo thermometer and how does it work?

A Galileo thermometer (or Galilean thermometer) is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying density. The individual floats rise or fall in proportion to their respective density and the density of the surrounding liquid as the temperature changes. It…

#### What’s inside a Galileo thermometer?

The Galileo thermometer consists of a sealed glass tube that is filled with water and several floating bubbles. The bubbles are glass spheres filled with a colored liquid mixture. This liquid mixture may contain alcohol, or it might simply be water with food coloring.

What’s a Galileo thermometer and how do you read it?

To read the ambient temperature on a Galileo thermometer is very easy. What you have to do is simply look at the lowest ball that is floating while ignoring those tags that had sunk to the bottom of the container. It’s those balls that float or are neutrally buoyant that interest us.

What is the clear liquid inside a Galileo thermometer?

The clear liquid inside the Galileo thermometer is not water, but is another liquid, typically ethanol, whose density varies with temperature more than the density of water does. This makes it more sensitive to temperature changes which makes it a better predictor for temperature than water.