Thermometer: FSA Eligibility

How was the thermometer invented?

The thermometer is one of the most vital diagnostic tools used in clinical examination and has evolved by leaps and bounds over the decades to become a fixture in American homes as well as the doctor's office. Historically, the first modern thermometer, or one that could measure temperature with a standardized scale, was invented in 1714 by Daniel Gabriel Fahrenheit. The German physicist invented an alcohol thermometer in 1709, developed the mercury device in 1714 and achieved fame in 1724 by inventing his standardized scale of temperature that we still use to this day (ThoughtCo.).

What are the modern types of thermometers?

Thermometers have come a long way from glass, mercury-filled tools and have evolved into precise diagnostic devices that are invaluable in assessing whether an individual is suffering from a medical condition. The most common thermometer types include via Cleveland Clinic:

• Digital Thermometers - Whether placed in the mouth, rectum or armpit, digital thermometers can accurately read body temperatures through the use of electronic sensors. This often takes a minute or less.
• Digital Ear Thermometers - These devices are geared toward small children who may experience discomfort with devices that are inserted into the mouth or rectum. These thermometers, also known as tympanic thermometers, use an infrared ray to measure temperature inside the ear canal.
• Forehead Thermometers - This variant is also designed to aid parents whose children may experience difficulty with traditional thermometers. Forehead thermometers use an infrared ray to scan the temporal artery in the forehead to measure body temperatures.