A thermocouple uses the thermoelectric effect to do what it does. Thermal energy (heat) is converted into a difference of potential, which is electric (electromagnetic) energy.
A photocell converts light energy (radiant electromagnetic energy to be precise) into electrical energy. A thermocouple can convert heat into electrical energy. The radiant em conversion yields much more energy than a heat conversion.
Thermal energy.
a Thermocouple
Thermocouple
A generator. It uses the heat energy from burning gasoline or a similar fuel.
A thermocouple does this, but a turbine does also.
Mechanical energy (a rotating generator), thermal energy (a thermocouple), chemical energy (a fuel cell)
It is a thermocouple that converts thermal energy into electrical energy through what is called the thermoelectric effect.
Use a thermocouple.
Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.Usually, the amount of useful energy after a conversion will be less than the original energy. In no case can it be more.
Energy Efficiency
Answer : Conversion Energy.