What invention is regarded as the first step in the development of meteorology as a science?

The invention regarded as the first step in the development of meteorology as a science is the thermometer. The thermometer, developed in the early 17th century, allowed for the systematic measurement of temperature, which is a fundamental element in understanding atmospheric conditions. By quantifying temperature, scientists were better able to study and analyze weather patterns and phenomena, laying the groundwork for meteorology as a scientific discipline.

The significance of the thermometer lies in its ability to provide consistent and objective data. Prior to its invention, temperature measurement was largely subjective and varied among different observers. The ability to measure temperature accurately opened the door to further advancements in weather prediction and understanding climate.

In contrast, other instruments like the barometer, psychrometer, and anemometer each focus on different aspects of meteorology—pressure, humidity, and wind speed, respectively. While important, these inventions came after the thermometer and built on the foundational knowledge it provided. The introduction of temperature measurement was crucial because temperature influences many other meteorological variables, making it a critical first step in the evolution of meteorological science.