The T-type thermocupde works by using a small amount of electricity to heat up the junction between the two wires. When the junction gets hot enough, it causes a change in electrical conductivity. By measuring this change in electrical conductivity, we can determine how much energy was absorbed by the junction. A T-type thermocouple is a thermocouple that has two wires connected at their ends. One wire is used to measure temperature while the other is used to control the heating element. This allows for precise temperature measurement without having to use a separate probe.