Eventually, you might not need a battery or a conspicuous external power source to keep a device running for years on end. A team at MIT has created a device that produces energy by exploiting the temperature swings that occur between day and night....
Device provides years of power through temperature swings
Eventually, you might not need a battery or a conspicuous external power source to keep a device running for years on end. A team at MIT has created a device that produces energy by exploiting the temperature swings that occur between day and night....