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History of Thermometer

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HISTORY OF THERMOMETERS DATE | EVENT | DESCRIPTION | 1593 | Galileo Thermoscope | In 1593, Galileo Galilei invented a thermoscope, which for the first time, allowed temperature variations to be measured. It was a container filled with bulbs of varying mass, each with a temperature marking. As the temperature changed so with the waters buoyancy, and some of the bulbs would sink and others would float. The lowest bulb indicated what temperature it is. | 1612 | Santorio Thermoscope | Santorio Sontorio became the first to put a numerical scale on his thermoscope. It was probably the first thermometer to be used for medical use as it was meant to be put in a patient's mouth for temperature taking. | 1654 | Ferdinand II thermometer | In 1654 the Grand Duke of Tuscany, Ferdinand II, invented the first liquid-in-a-glass thermometer. He use alcohol as his liquid, but his thermometer was still inaccurate and didn't use a standardized scale. | 1714 | Daniel Gabriel Fahrenheit | Daniel Fahrenheit was the inventor of the modern day thermometer filled with mercury, and in 1724 he introduced the Fahrenheit scale which could be used to record changes in temperature accurately. On this scale water freezes at 32 degrees and boils at 212 degrees. Fahrenheit based his scale on the human body temperature which was 100 degrees but has been adjusted to being 98.6 degrees. | , 1742 | Celsius Scale | In 1742, the Celsius scale was invented by Swedish Astronomer Anders Celsius. The Celsius scale has 100 degrees between the freezing point and boiling point of pure water at sea level air pressures those being 0 degrees and 100 degrees. This scale was not adopted until 1948 by an international conference on weights and measures. | 1848 | Kelvin Scale | The Kelvin Scale measures the ultimate extremes of hot and cold. Kelvin developed the idea of absolute temperature, and developed the

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