Scientific Beauty: Galileo Thermometer
Galileo Galilei was an Italian physicist, mathematician, astronomer and philosopher,
played an important role in the scientific revolution, the 16 th century. He was the first who discovered
that the density of liquid changes as a result of raising or lowering the temperature.
Named in his honor, the thermometer is made of sealed glass cylinder. Inside the pure liquid and a few bubbles, each of which has weights. 
As the temperature changes, they rise and fall depending on the mathematical principles. And yet the thermometer Galilean addition there is the practical value and aesthetic - is itself a beautiful object. 
Even though Galileo did not create this thermometer, it was named in his honor, because without his discoveries would not have a thermometer. These devices are produced since the late 17th century. 
Each bubble is attached plummet. On each of them engraved with the symbol and number. This balances. Each of them differs from the others. 
In the vesicles was added colored water to each bubble has the same density. But it gave the thermometer of its beauty. 
Mathematical principles of the thermometer is very simple. Each bubble in the thermometer has the same volume, and hence the same density
This means that each bubble has the same gravity and magnitude of buoyant force. Gravity (gravity) pushes down, the buoyancy force - up. 
Each is marked by bubbles weights attached to its base. This plummet increases the relative weight of the bladder, as well as the effect of its gravity. Weights means that the density of each bubble is a little different from others.
That ball, which is located on the bottom, and shows the current temperature. 
As soon as the density of the fluid around the bubble is changed, the attractive forces exceeds the buoyant force, so the bubble is at the bottom. When the temperature rises, the density of the fluid also increases.
When the density decreases, the buoyancy force is also reduced. All bubbles are constant, so that when the temperature and fluid increases, the buoyancy force decreases due to the proportionality to the density of the liquid and the bubble goes to the bottom. 
The same and vice versa, when the density of water increases. Each bubble has a weight, so that he will rise and fall in a certain density of the liquid at a certain temperature. 
In terms of design thermometer is elegant and beautiful form. This is a true example of scientific beauty, or beautiful science. 
played an important role in the scientific revolution, the 16 th century. He was the first who discovered
that the density of liquid changes as a result of raising or lowering the temperature.
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