there are little glass bubbles filled with a colored liquid, usually food coloring and water. each little bubble has a weight attached with the temperature engraved into it. all these bubbles are about the same density as water, and as the temperature changes, the bubbles float and sink. the bubble that sinks to the bottom is the current temperature.
The temperature-dependent property that a Galileo thermometer makes use OS is the density of liquid. The thermometer contains several sets of spheres and tags. Each of the sets has a specific density. Since the density of the liquid in the thermometer varies with temperature, spheres with densities lower float while the others sink at a certain temperature. Thus, the tag on the lowest floating sphere tells us the temperature.
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. Attached to each bubble is a little metal tag that indicates a temperature. A number and degree symbol are engraved in the tag. These metal tags are actually calibrated counterweights. The weight of each tag is slightly different from the others. Since the bubbles are all hand-blown glass, they aren't exactly the same size and shape. The bubbles are calibrated by adding a certain amount of fluid to them so that they have the exact same density. So, after the weighted tags are attached to the bubbles, each differs very slightly in density (the ratio of mass to volume) from the other bubbles, and the density of all of them is very close to the density of the surrounding water. If you have read this question, then you know that an object immersed in a fluid experiences two major forces: the downward pull of gravity and the upward push of buoyancy. It is the downward force of gravity that makes this thermometer work. The basic idea is that as the temperature of the air outside the thermometer changes, so does the temperature of the water surrounding the bubbles. As the temperature of the water changes, it either expands or contracts, thereby changing its density. So, at any given density, some of the bubbles will float and others will sink. The bubble that sinks the most indicates the approximate current temperature. Consider this example: Let's say there are five bubbles in the thermometer: * A blue bubble that represents 60 degrees * A yellow bubble that represents 65 degrees * A green bubble that represents 70 degrees * A purple bubble that represents 75 degrees * A red bubble that represents 80 degrees The blue bubble (60 degrees) is the heaviest (densest) bubble, and each bubble thereafter is slightly lighter, with the red bubble being the lightest. Now, let's say the temperature in the room is 70 degrees. 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. The purple and red bubbles each have a density that is lower than the surrounding water, so they float at the very top of the thermometer. Since the green bubble is calibrated to represent 70 degrees, the same temperature as the water, it sinks slightly so that it is floating just below the purple and red bubbles -- thereby indicating the room's temperature!
Galileo Galilei did not invent the thermometer. The thermometer was actually invented by Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary Galileo's contemporary, Galileo Galilei. The thermometer was actually invented by Galileo's contemporary, Galileo's contemporary.
compass, thermometer. telescope, and the compound microscope :)(hope it helps)
How did you get carper stains on your Galileo thermometer ? May help with a solution for removing them if I know what is on there and how it got there :o)
A Galileo thermometer is a thermometer made of a sealed glass cylinder containing a clear liquid and a series of objects whose densities are such that they rise or fall as the temperature changes.
Galileo
Galileo made the thermometer in 1593.
Galileo Galilei did not invent the thermometer. The thermometer was actually invented by Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary, Galileo's contemporary Galileo's contemporary, Galileo Galilei. The thermometer was actually invented by Galileo's contemporary, Galileo's contemporary.
Galileo was the first one to invent the thermometer but another guy made a better thermometer than Galileo butt basically it is Galileo who invented the thermometer
He invented the compass, the kind you use on maps and in math class, a thermometer - Galileo thermometer, and created Galileo's paradox in math. He did the basic principle of relativity. His work with pendulums lead to the pendulum clock.
John Thermometer
Galileo
No - Daniel Fahrenheit invented the thermometer, or at least took credit for its invention.
compass, thermometer. telescope, and the compound microscope :)(hope it helps)
1593 and it is call The Galilean Thermometer.
he invented the thermometer in year 1593
he invented th the telescope,compass,thermometer
in his lab