Are perpetual motion machines possible? | Summary and Q&A

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December 8, 2015
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Are perpetual motion machines possible?

TL;DR

Perpetual motion machines, which claim to produce continuous energy without an energy source, are impossible due to physics and the law of conservation of energy.

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Key Insights

  • πŸ§‘β€πŸ­ Perpetual motion machines claim to produce continuous energy without an energy source, but they are impossible due to various factors such as friction and gravity.
  • 🀞 The desire to create perpetual motion machines stems from the hope of achieving unlimited energy and getting something for nothing.
  • πŸ’¦ Claims of perpetual motion machines throughout history have been debunked, with working prototypes being a requirement for patent grants.
  • πŸ₯΅ Even the popular drinking bird toy, while appearing to be perpetual motion, is powered by the ambient heat in the room.

Transcript

[MUSIC PLAYING] What if I told you I built a machine that creates energy? My ingenious design works like this. As the wheel turns, the coins fall in the slots so that one side of the wheel is always heavier than the other, which would keep pulling that side down, and the wheel would never stop turning. Without so much as a push, this wheel would sp... Read More

Questions & Answers

Q: How does the design of the wheel in a perpetual motion machine contribute to its failure?

The wheel in a perpetual motion machine is designed to have one side heavier than the other. However, gravity and the center of gravity always cause the wheel to swing back and forth until it stops due to friction.

Q: Why have people throughout history claimed to have created perpetual motion machines?

People have always been fascinated by the idea of getting something for nothing. The desire to create a perpetual motion machine stems from this fascination and the hope of achieving unlimited energy.

Q: Is there a real-life example of a perpetual motion machine?

No, perpetual motion machines do not exist in reality. Claims of such machines are often based on misunderstandings of physics principles and are not backed by working prototypes.

Q: What is the energy source behind a drinking bird toy?

The energy source for a drinking bird toy is the ambient heat in the room. The temperature difference between the top and bottom of the toy creates a pressure difference, causing the liquid to flow and tip the bird over. The room then warms the toy again, creating a cycle.

Summary & Key Takeaways

  • The concept of perpetual motion machines involves creating a machine that generates energy without an energy source.

  • However, friction on the axle and the force of gravity ultimately prevent these machines from working.

  • The law of conservation of energy states that energy cannot be created or destroyed, making perpetual motion machines impossible.

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