5 ms·Not without generating waste heat. It's a fundamental law of nature.by idlewords 11y agoNot without generating waste heat. It's a fundamental law of nature.mrfusion 11y agoRight but you don't have to reradiate all the energy.ars 11y agoYou kind of do. Energy available is a function of the difference between the input and output energy. You can do useful work with the difference. It's not possible to harvest everything without also emitting some.