1. These thermal gradients in turn may generate a voltage through the Seebeck effect . 2. This relation expresses a subtle and fundamental connection between the Peltier and Seebeck effects . 3. Peltier discovered the Peltier Seebeck effect ). 4. This is known as the Seebeck effect . 5. This is now called the Peltier Seebeck effect and is the basis of thermocouples and thermopiles. 6. A thermocouple is a Seebeck effect . 7. Similarly, thermocouples use the Peltier Seebeck effect to measure the temperature difference between two points. 8. The Seebeck effect can be attributed to two things : charge-carrier diffusion and phonon drag. 9. Thermoelectric generators operating on the Seebeck Effect show promise due to their total absence of moving parts. 10. Since 1961, some unmanned spacecraft ( including the RTGs ) that convert thermal energy into electrical energy using the Seebeck effect .