clinical thermometer

A clinical thermometer is a medical device used to measure body temperature. It features a constriction above the bulb that prevents the liquid column from falling after reaching its maximum temperature, allowing it to indicate the highest temperature reached until reset. The human body maintains a stable internal temperature, typically around 37 °C (98.6 °F), through a process called homeostasis, regulated by the hypothalamus in the brain. Historically, diagnosis relied heavily on observation and patient history, but technological advancements like the thermometer, first developed by Galileo Galilei and later refined with mercury and standardized scales by Fahrenheit and Celsius, significantly improved diagnostic accuracy.1234