Omega is a letter in the Greek alphabet
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The omega symbol, Ω, is derived from the Greek alphabet and was not invented by a specific country. It has been used in mathematics and science for centuries to represent various concepts, such as resistance in physics and the last element in a series in mathematics.
The thermometer was invented by Galileo Galilei in Italy in the early 17th century.
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The microscope was invented in the Netherlands by Antonie van Leeuwenhoek in the 17th century.
The astrolabe was not invented by a single country, but its development can be traced back to ancient Greece. It was further refined by Islamic astronomers during the Middle Ages and later used by European navigators during the Age of Exploration.
The Hubble Space Telescope was invented by the United States. It was launched in 1990 and has provided valuable insights and stunning images of the universe.