Recent content by atal

Thank you for your contributions. Yes, it was about the second law; and it was in a book on thermodynamics. And yes, I do refer to free energy as resulting from perpetual motion. Not only is my recollection accurate, but I managed to prove that those authors had good intuition and open minds...

I found textbooks on physics (long time ago, when I was a student) where the authors said (paraphrase): "We do not assert that perpetual motion is impossible. It just hasn't been seen so far." What do the mentors and contributors say about that statement? (berkeman?)

Is gravitational acceleration, g, at any given spot around the globe imparting sufficient velocity so that the interaction (interchangeable) between a ferromagnetic coil and a magnetic field may generate electricity?