Final answer:
Anders Celsius developed the Celsius temperature scale to offer a simpler and more scientifically rational system than the Fahrenheit scale, basing it on the freezing and boiling points of water set at 0°C and 100°C with 100 equal intervals.
Step-by-step explanation:
Swedish astronomer Anders Celsius was inspired to invent a temperature scale to improve on the limitations of the Fahrenheit scale, which was perceived to have arbitrary definitions for temperature points. Recognizing the need for a more rational system, particularly for scientific purposes, Celsius introduced his scale in the 18th century.
The Celsius scale set the freezing point and boiling point of water at 0°C and 100°C respectively, dividing the interval between these two points into 100 equal degrees, which made it much simpler and appealing for scientific use compared to the Fahrenheit scale.