Meteorology is the science of understanding the atmosphere and forecasting weather phenomena. The word was coined from Aristotle's book "Meteorologica" which described elements of the earth including weather and wind. Early weather forecasting relied on observing clouds and wind patterns. The invention of instruments like the thermometer and barometer by Galileo, Pascal, and Torricelli helped measure temperature and air pressure, leading to a better understanding of links between the atmosphere and weather changes. Modern meteorology uses these measurements and theories of atmospheric dynamics to provide daily weather forecasts relied on by many industries.