PBS Space Time - S2019E07: The Impossibility of Perpetual Motion Machines
Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the perpetual motion machine. No working perpetual motion machine has ever been experiment verified. All break the laws of thermodynamics. In fact, we classify based on WHICH law of thermodynamics they break. We have perpetual motion machines of the first kind - they violate energy conservation - they pump more energy out than they need to keep running. This includes most of the historical devices. Then there are machines of the second kind - they’re a bit more subtle in their wrongness because break the second law of thermodynamics - extracting energy by reversing entropy. Many modern “free-energy” devices fall into this category. Now the best modern designs are by you - answers to our recent challenge question, which we’ll get to at the end. But first let’s take a look at examples of what other people came up with - this’ll be a fun little journey through some ...
Cast: Matthew O’Dowd
All Episodes - Season 2019
01Are Dark Matter And Dark Energy The Same?Jan 09, 201902Our Antimatter, Mirrored, Time-Reversed UniverseJan 16, 201903The Crisis in CosmologyJan 24, 201904Perpetual Motion From Negative Mass?Jan 30, 201905Sound Waves from the Beginning of TimeFeb 07, 201906Secrets of the Cosmic Microwave BackgroundFeb 20, 201907The Impossibility of Perpetual Motion MachinesMar 06, 201908Will You Travel to Space?Mar 13, 201909Is Dark Energy Getting Stronger?Mar 20, 201910Could the Universe End by Tearing Apart Every Atom?Mar 28, 201911The Edge of an Infinite UniverseApr 03, 201912The Holographic Universe ExplainedApr 10, 201913No Dark Matter = Proof of Dark Matter?Apr 24, 201914The Real Science of the EHT Black HoleMay 01, 201915Why Quantum Computing Requires Quantum CryptographyMay 09, 201916The Cosmic Dark AgesMay 16, 201917The Alchemy of Neutron Star CollisionsJun 06, 201918How Black Holes Kill GalaxiesJun 17, 201919The Quasar from The Beginning of Time - STELLARJun 20, 201920Thorium and the Future of Nuclear EnergyJul 01, 201921The Quantum InternetJul 15, 201922Did Time Start at the Big Bang?Jul 18, 201923Deciphering The Vast Scale of the Universe - STELLARJul 25, 201924What Caused the Big Bang?Aug 06, 201925Exploring Arecibo in VR 180Aug 12, 201926What Happened Before the Big Bang?Aug 19, 201927How To Become an Astrophysicist + Challenge Question!Aug 26, 201928Is Earth's Magnetic Field Reversing?Sep 03, 201929Could We Terraform Mars?Sep 16, 201930Is Pluto a Planet?Sep 23, 201931How Many Universes Are There?Sep 30, 201932Black Hole HarmonicsOct 07, 201933Loop Quantum Gravity ExplainedOct 15, 201934Is Time Travel Impossible?Oct 21, 201935Why We Might Be Alone in the UniverseNov 04, 201936Does Life Need a Multiverse to Exist?Nov 11, 201937Can You Observe a Typical Universe?Nov 18, 201938Is The Universe Finite?Dec 02, 201939The Doomsday ArgumentDec 09, 201940Do Black Holes Create New Universes?Dec 17, 2019 PBS Space Time S2019E07 Synopsis
Stream PBS Space Time "The Impossibility of Perpetual Motion Machines" in HD quality on Goojara. Originally aired on 2019-03-06, this episode is part of Season 2019 of PBS Space Time. Featuring performances from Matthew O’Dowd among the cast. With a runtime of 17m, the episode keeps you engaged throughout. As part of this Documentary and Talk series, the episode continues to build on the show's compelling narrative. Bad ideas come and go in physics. But there’s one bit of nonsense that is perhaps more persistent than all others: the perpetual motion machine. No working perpetual motion machine has ever been experiment verified. All break the laws of thermodynami...
