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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 wooden base. Makes a great gift item and lasting conversation piece! Galileo Galilei, the pioneer of modern astronomy and physics, (1564-1642), discovered that liquids change density as the temperature increases or decreases. Based on this principle, the colored glass spheres inside the glass Galileo thermometer have been precisely weighted so that they respond to temperature changes. When the temperature rises, the liquid inside the Galileo thermometer becomes less dense and the colored spheres floating inside will sink towards the bottom. When the temperature of the room cools, the process is reversed and the spheres will rise from the bottom. The Storm Glass is hand blown and accurately forecasts changes in the weather hours in advance. The Storm Glass, or Goethe Barometer, is regarded as the oldest barometer in the world. Although Johan Wolfgang von Goethe is sometimes credited with its invention, one was found in his bedroom after his death, there is evidence that the Moors used similar instruments during the 8th century. Also called Thunder Glasses, historians believe the early settlers sailed to the Americas using this rudimentary barometer. One-year limited warranty. It's more than accurate, it's AcuRite.
For hundreds of years, the Galileo Thermometer with Glass Barometer have offered function and timeless beauty. To this day, they remain a distinctive decorative accent for any home or office.
A decorative thermometer that really works.
The Galileo Thermometer works on principles developed by Galileo Galilei (1564-1642), the pioneer of modern astronomy and physics. Through his experiments, Galileo discovered that liquids change density as the temperature increases or decreases.
A large glass tube is filled with clear liquid. Floating inside the tube are five small glass bulbs. The bulbs are calibrated by filling them with precise amounts of colored liquid so that they have a specific density relative to the clear liquid in the main tube (some bulbs are calibrated to be higher in density and some are lower). Finally, metal tags that serve as counter weights are hung from each bulb. A temperature is engraved on each tag.
When temperature rises, the liquid inside the glass thermometer tube becomes less dense and the liquid-filled bulbs will sink. When the temperature drops, the liquid inside the tube becomes denser and the liquid-filled bulbs will float. Since the bulbs are different density, some will sink or float more than others.
The Storm Glass Barometer also works on principles developed during Galileo’s time. Attempts to solve problems with water pumps led to experiments by scientists such as Gasparo Berti and Evangelista Torricelli. These experiments unintentionally resulted in an effective instrument to gauge atmospheric pressure, and in turn, the weather.
Atmospheric pressure exerts force down the barometer’s glass spout, affecting the liquid level inside the barometer’s globe.
It's not just a decorative thermometer, it actually works! Each bulb inside the Galileo Thermometer represents a temperature, as indicated by the metal hang tags beneath each bulb."p" The temperature is determined by the lowest floating bulb in the thermometer. "p" When a bulb is seen floating in the middle of the tube, the temperature reading is between that bulb and the lowest floating bulb at the top of the tube. "p" If all the bulbs float to the top, the temperature is less than the lowest floating bulb. "p" If all the bulbs sink, the temperature is above the highest bulb.
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