Disproving perpetual energy and perpetual motion machines.

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SUMMARY

Perpetual motion machines are fundamentally impossible due to the laws of thermodynamics, specifically the principles of energy dissipation through friction, air resistance, and magnetic field resistance. Key discussions highlight the failure of such machines and reference notable examples, including the work of Prof David Jones, who created deceptive machines that appeared to operate perpetually. For further understanding, several articles are recommended that delve into the physics behind these concepts.

PREREQUISITES
  • Understanding of the laws of thermodynamics
  • Familiarity with concepts of energy dissipation
  • Knowledge of friction and air resistance in physical systems
  • Awareness of historical examples of perpetual motion machines
NEXT STEPS
  • Research the laws of thermodynamics in detail
  • Explore the concept of energy dissipation in mechanical systems
  • Study historical cases of perpetual motion machines and their failures
  • Read articles on the physics of energy conservation and its implications
USEFUL FOR

Physicists, engineering students, science educators, and anyone interested in understanding the fundamental principles of energy and motion in physical systems.

Ward
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Hi,

I was having a discussion with somebody who was trying to convince me of these things which I don’t believe.
However I kept trying to think of the physics laws that make these things impossible.

To my mind came resistance and friction. But I feel there are other science laws that I have missed.

Some law of thermodynamics comes to mind.

What terms and laws have I missed so I am even better prepared for next time

Plus any great articles that you can recommend to read.

Thanks
Ward
 
Physics news on Phys.org
Perpetual motion machines violate the laws of thermodynamics as you can always find places where energy is disappated in either friction or air resistance or resistance to a magnetic field...

Here's some examples:

https://www.realclearscience.com/blog/2018/12/03/six_perpetual_motion_machines_and_why_none_of_them_work.html

and here's some discussion on why they fail:

https://futurism.com/what-physics-says-about-perpetual-motion-machines-free-energy-r
Lastly, there was a mischievous physicist in England, Prof David Jones who developed machines that appeared to be perpetual motion machines and challenged folks to figure out how they worked.



https://blogs.royalsociety.org/history-of-science/2018/09/25/perpetual-motion/
https://www.wired.com/story/the-physics-of-a-puzzling-perpetual-motion-machine/
https://www.wired.com/2016/04/physics-behind-another-bogus-perpetual-motion-machine/
You can find more online via Google.

Closing this thread now since we no longer discuss perpetual motion on PF.
 
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