The Impossibility of Perpetual Motion Machines

PBS Space Time Season 2019 Episode 7

Overview:
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 ...

Genre : Documentary, Talk

Actors : Matthew O’Dowd

Release Date : 2019-03-06

Duration : 17 menit

Rating : ⭐ 0/10 (0 votes)

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Other Episodes (Season 2019)

Are Dark Matter And Dark Energy The Same?
1. Are Dark Matter And Dark Energy The Same?
Our Antimatter, Mirrored, Time-Reversed Universe
2. Our Antimatter, Mirrored, Time-Reversed Universe
The Crisis in Cosmology
3. The Crisis in Cosmology
Perpetual Motion From Negative Mass?
4. Perpetual Motion From Negative Mass?
Sound Waves from the Beginning of Time
5. Sound Waves from the Beginning of Time
Secrets of the Cosmic Microwave Background
6. Secrets of the Cosmic Microwave Background
The Impossibility of Perpetual Motion Machines
7. The Impossibility of Perpetual Motion Machines
Will You Travel to Space?
8. Will You Travel to Space?
Is Dark Energy Getting Stronger?
9. Is Dark Energy Getting Stronger?
Could the Universe End by Tearing Apart Every Atom?
10. Could the Universe End by Tearing Apart Every Atom?
The Edge of an Infinite Universe
11. The Edge of an Infinite Universe
The Holographic Universe Explained
12. The Holographic Universe Explained
No Dark Matter = Proof of Dark Matter?
13. No Dark Matter = Proof of Dark Matter?
The Real Science of the EHT Black Hole
14. The Real Science of the EHT Black Hole
Why Quantum Computing Requires Quantum Cryptography
15. Why Quantum Computing Requires Quantum Cryptography
The Cosmic Dark Ages
16. The Cosmic Dark Ages
The Alchemy of Neutron Star Collisions
17. The Alchemy of Neutron Star Collisions
How Black Holes Kill Galaxies
18. How Black Holes Kill Galaxies
The Quasar from The Beginning of Time - STELLAR
19. The Quasar from The Beginning of Time - STELLAR
Thorium and the Future of Nuclear Energy
20. Thorium and the Future of Nuclear Energy
The Quantum Internet
21. The Quantum Internet
Did Time Start at the Big Bang?
22. Did Time Start at the Big Bang?
Deciphering The Vast Scale of the Universe - STELLAR
23. Deciphering The Vast Scale of the Universe - STELLAR
What Caused the Big Bang?
24. What Caused the Big Bang?
Exploring Arecibo in VR 180
25. Exploring Arecibo in VR 180
What Happened Before the Big Bang?
26. What Happened Before the Big Bang?
How To Become an Astrophysicist + Challenge Question!
27. How To Become an Astrophysicist + Challenge Question!
Is Earth's Magnetic Field Reversing?
28. Is Earth's Magnetic Field Reversing?
Could We Terraform Mars?
29. Could We Terraform Mars?
Is Pluto a Planet?
30. Is Pluto a Planet?
How Many Universes Are There?
31. How Many Universes Are There?
Black Hole Harmonics
32. Black Hole Harmonics
Loop Quantum Gravity Explained
33. Loop Quantum Gravity Explained
Is Time Travel Impossible?
34. Is Time Travel Impossible?
Why We Might Be Alone in the Universe
35. Why We Might Be Alone in the Universe
Does Life Need a Multiverse to Exist?
36. Does Life Need a Multiverse to Exist?
Can You Observe a Typical Universe?
37. Can You Observe a Typical Universe?
Is The Universe Finite?
38. Is The Universe Finite?
The Doomsday Argument
39. The Doomsday Argument
Do Black Holes Create New Universes?
40. Do Black Holes Create New Universes?

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