A temperature measurement system determines a body temperature. The system includes a first temperature sensor； a first insulation material thermally coupled to the first temperature sensor with a first thermal resistance； a second temperature sensor spaced from the first temperature sensor； a second insulation material thermally coupled to the second temperature sensor with a second thermal resistance that is different from the first thermal resistance； an isothermal plate thermally coupled to the first insulation material and the second insulation material； and an isothermal plate temperature sensor. Heat conduction occurs along a first heat conduction path from the body, through the first insulation material, and to the isothermal plate, and the first temperature sensor measures a first temperature. Heat conduction occurs along a second heat conduction path from the body, through the second insulation material, and to the isothermal plate, and the second temperature sensor measures a second temperature.
