During the 1960s specified properties of semiconductors began to be utilized for commercial refrigeration. Chief amid these was the Peltier outcome, named after the French chemist Jean Peltier, who observed in 1834 that electric currents passing through the junction of two distinct metals from time to time caused the junction https://walk-in-refrigerator-repa31975.wikicommunication.com/4904407/not_known_details_about_commercial