Thermometer, electronic device having a thermometer, and method for measuring body temperature

A thermometer comprising:

• first temperature measuring device being configured to contact a first body surface of an organism, said first temperature measuring device having
• a first base temperature measuring unit to measure a first base temperature from said first body surface at a first base temperature measuring position having a first heat resistance, and
• a first heat flux measuring unit to measure a first heat flux at said first base temperature measuring position;
• second temperature measuring device being configured to contact a second body surface at a position different from said first body surface, said second temperature measuring device having
• a second base temperature measuring unit to measure a second base temperature from said second body surface at a second base temperature measuring position having a second heat resistance having an unknown ratio to said first heat resistance, and
• a second heat flux measuring unit to measure a second heat flux at said second base temperature measuring position;
• a heat flux adjusting device being configured to set said first heat flux and said second heat flux at different values;
• and
• a deep-area temperature calculating device being configured to calculate the temperature of a deep area in the organism using the ratios of said first and second base temperatures, said first and second heat flux, and said first and second heat resistance.