Galileo invented the first documented thermometer in about 1592. It was an air thermometer consisting of a glass bulb with a long tube attached. The tube was dipped into a cooled liquid and the bulb was warmed, expanding the air inside.
Weather records taken 100 years ago, or longer than that, were very accurate, and in some respects were more reliable than those taken today. Weather Bureau thermometers in the early 1900s were accurate to 0.1 degree and dew point temperatures were hand-calculated using ventilated wet-bulb readings.
1612 Santorio Santorio – The First Thermometer The Italian, Santorio Santorio (1561-1636) is generally credited with having applied a scale to an air thermoscope at least as early as 1612 and thus is thought to be the inventor of the thermometer as a temperature measuring device.
Anders Celsius invented his temperature scale in 1742. Using a mercury thermometer, the Celsius scale consists of 100 degrees between the freezing point (0° C) and boiling point (100° C) of pure water at sea level air pressure. The definition of centigrade: Consisting of or divided into 100 degrees.
What are the different types of thermometer? Digital thermometers. Digital thermometers are regarded as the fastest and most accurate type of thermometer. Electronic ear thermometers. Forehead thermometers. Plastic strip thermometers. Pacifier thermometer. Glass and mercury thermometers.
There are three temperature scales in use today, Fahrenheit, Celsius and Kelvin. Fahrenheit temperature scale is a scale based on 32 for the freezing point of water and 212 for the boiling point of water, the interval between the two being divided into 180 parts.
According to a continuous study conducted by the NASA’s Goddard institute, the Earth’s average global temperature has risen by 0.8 degrees Celsius or 1.4 degrees Fahrenheit since 1880. Since the beginning of the Industrial Revolution, the thermometer readings have risen continuously.
Earth’s global average surface temperature in 2020 tied with 2016 as the warmest year on record, according to an analysis by NASA.
The Little Ice Age was caused by the cooling effect of massive volcanic eruptions, and sustained by changes in Arctic ice cover, scientists conclude. They say a series of eruptions just before 1300 lowered Arctic temperatures enough for ice sheets to expand.
The first real medical thermometer was invented by Sir Thomas Allbut in 1867.
Virtually every country on earth aside from the United States measures temperature in Celsius. This makes sense; Celsius is a reasonable scale that assigns freezing and boiling points of water with round numbers, zero and 100. In Fahrenheit, those are, incomprehensibly, 32 and 212.
Celsius (°C) is another measure of temperature. Celsius is used is most countries in the world – except the United States! In Celsius, 0° is very cold! 40° is very hot!
French physicist Jean-Pierre Christin developed a scale similar to Celsius ‘ several years later, but he had 0 degrees representing the freezing point and 100 degrees the point where water boils. His death prompted a move to officially invert the scale, and by 1747 the scale was already changed on some thermometers.