Part 1 of 2:Positioning the Thermometer
Identify the temperature stamped onto each medallion. The thermometer consists of a glass tube filled with a clear liquid, in which colored glass spheres float. Each sphere has a metal medallion hanging from it. The medallions are different weights, which makes the spheres float or sink different amounts.
Look closely at each metal medallion. You will see a temperature engraved onto it.
Different Galileo thermometers have different ranges of temperatures that they can report. For example, many have a range of 60 °F (16 °C) to 100 °F (38 °C) and won't tell you the temperature if it's higher or lower than those values. Note that the spheres sink when it's hot out and float when it’s cool. The Galileo thermometer works because of the principle of buoyancy, which states that objects that are denser than their surroundings sink, and objects that are less dense than their surroundings float. The temperature surrounding the thermometer will make the liquid in the thermometer more dense as it cools, or less dense as it heats up. The spheres will sink when the temperature is hot, and float when the temperature is cool.
The spheres also contain liquid, but it changes density much less rapidly than the clear liquid in the thermometer, so it isn’t affected by the temperature change.
The spheres are different colors just to look beautiful. Hang the thermometer from a hook to find out the air temperature. 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. They’ll be able to tell you roughly the temperature of the room, within 4 °F (−16 °C). Their main benefit is that they're beautiful, with all those floating glass spheres. Place the thermometer in a beaker of water to test the water temperature. This is a good way to demonstrate using the thermometer, especially if you’re doing it in a classroom. Full a big beaker with water that’s either colder or warmer than the ambient temperature of the room. Then put in the Galileo thermometer.
Using a beaker of water is great for a classroom demonstration because the temperature change between the air and the water makes for a dramatic show.
Part 2 of 2:Reading the Temperature Properly
Read the temperature of the sphere floating in the middle of the tube if there is one. Sometimes a cluster of spheres floats by the top of the tube, and a cluster sinks to the bottom, while one sphere hangs in the middle. If that’s the case, read the temperature tag on the middle sphere.
This is the most common scenario. Average the lowest and highest spheres if there isn't one in the middle. In some cases, there will be 2 groups of spheres hanging out, 1 in the top of the tube and 1 in the bottom. If that’s the case, read the temperature of the lowest sphere in the top group and the highest sphere in the bottom group. Take the average by adding them together and dividing by 2. That’s your temperature.
For example, if one sphere says 72 and one says 68, your average temperature would be 70. Mark the temperature as colder than the highest sphere if they all float. When the outside temperature is quite cold, all of the spheres will float toward the top of the tube. Read the temperature on the highest of the floating spheres. The ambient temperature is colder than that reading.
The spheres float because the liquid inside the tube becomes denser than the spheres. Note that the temperature is hotter than the lowest sphere if they all sink. The Galileo thermometer doesn’t measure accurately at really high temperatures. All the spheres will sink toward the bottom of the tube, and all you’ll know is that the temperature is hotter than the one on the medallion of the lowest sphere.
The spheres sink in high temperatures because as the liquid in the tube heats up, it becomes less dense than the spheres.
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Apr 24, 2017 . Hang your Galileo thermometer indoors and from a hook. For the most accurate results, it's best to not hang the thermometer in direct sunlight. Allow a few minutes for the floating spheres within the thermometer tube to rise and fall according to the current temperature.
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May 18, 2015 . Instructions 1. Hang your Galileo thermometer inside and from a hook. For the most accurate results, it's best not to hang the thermometer in direct sunlight. 2. Let a few minutes for the spheres that are floating within the thermometer tube to climb and fall in …
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Instruction manual Galileo thermometer & barometer model 00795 congratulations on your new acurite product. 1000+ images about Thermometers on Pinterest Lab puppies . Our Galileo Thermometer with Wood Frame is a unique . Galileo Thermometer . SolarPowered Bluebirds on a Log (With images) Garden . Galileo Thermometer Galileo thermometer, Thermometer
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Galileo thermometers are a great gift item and look beautiful on a desktop or mantle. This experiment is designed to reproduce a portion of Galileo's experiments. Draw a line at right angles using a carpenter’s square. Nuk thermometer flash instruction manual. We said it was easy to read a Galileo thermometer, not that it was convenient.
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Jun 10, 2014 . How do you read a Galileo Thermometer? It’s actually quite easy: Each diver has a temperature tag hanging from it. To read the temperature just look at the lowest ball that is floating .
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1) Locate the lowest floating temperature sphere. 2) Read the medallion attached to that sphere.
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5. Galileo Thermometer 5.1 How the Galileo thermometer works 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. Attached to each bubble is a little metal tag that indicates a temperature. These metal tags are
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Mar 31, 2019 . The Galileo Thermometer may be a much more complex instrument, but it is based on the thermoscope that Galileo invented as a result of his theory. Although most of us understand what density is, it is a bit harder to define in words.
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5. Galileo Thermometer 5.1 How the Galileo thermometer works The Galileo thermometer consists of a sealed glass tube that is filled with paraffin oil and several floating bubbles. The bubbles are glass spheres filled with a colored liquid mixture. Attached to each bubble is a …
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A Galileo 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 is named after Galileo Galilei because he discovered the principle on which this thermometer is based—that the density of a …
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Mary McMahon Galileo thermometers are simple, accurate, and decorative thermometers. A Galileo thermometer is a very simple and surprisingly accurate thermometer named after Galileo Galilei, a noted 16th century scientist.While these thermometers are primarily kept around as novelty items, they can also be utilized as functional measures of the temperature.
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The glass Galileo thermometer with globe storm glass combines style and functionality as a beautiful accent piece for any home or office. Features an 11-inch Galileo thermometer, a glass Goethe barometer with frosted world map decoration and a wooden base.
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Lily's Home Galileo Thermometer, A Timeless Design That Measures Temperatures from 64ºF to 80ºF, 5 Multi-Colored Spheres (11 Inches) 4.7 out of 5 stars. 759. $24.95. $24. . 95. Lily's Home Desktop Weather Station, with Galileo Thermometer and Fitzroy Storm Glass Weather Predictor, 5 Multi-Colored Spheres. 4.3 out of 5 stars.
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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...
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.
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.
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...
Based on a thermoscope invented by Galileo Galilei in the early 1600s, the thermometer on your co-worker's desk is called a Galileo thermometer. A simple, fairly accurate thermometer, today it is mostly used as decoration. The Galileo thermometer consists of a sealed glass tube that is filled with water and several floating bubbles.
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.
The glass tube of a thermometer usually contains mercury. Mercury is perfect to test temperature because it changes from a solid to liquid very easily. When the metal tip of the thermometer comes into contact with the material it is testing, it conducts heat energy to the mercury. The mercury turns into liquid and so it expands.