Textbook talks about Planck time

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Discussion Overview

The discussion revolves around the concept of Planck time, its definition, and the laws of physics that may be applicable to it. Participants seek to clarify their understanding of Planck time and explore its relationship with various physical laws.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses confusion about the meaning of Planck time after reading a textbook section and questions which laws of physics can be applied to it.
  • Another participant defines Planck time as the time it takes for a photon to travel a distance equal to the Planck length, suggesting this as a foundational understanding.
  • Several participants inquire about the applicability of different physical laws, including gravitational law, the law of refraction, and the theory of relativity, in relation to Planck time.

Areas of Agreement / Disagreement

There is no clear consensus on the understanding of Planck time or the specific laws of physics that apply to it, as participants express varying degrees of confusion and curiosity about the topic.

Contextual Notes

Participants reference the relationship between Planck time, gravity, and the behavior of photons, but do not resolve the implications or applications of these connections.

Kudo Shinichi
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A section in my textbook talks about Planck time, but I still don't quite get what does it mean after I finished reading it. I am also wondering whcih laws of physics can be applied to the Planck time.
Some info that might be helpful for answering this question:
tp=√(Gh/c^5)
where G is the gravitational constant, h is Planck's constant, and c is speed of light.

Thanks
 
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What do you need to understand about Planck time? It's just defined as the amount of time a photon would take to cover a distance equivalent to the Planck length.

See Wikipedia for details:
http://en.wikipedia.org/wiki/Planck_time
 


Defennder said:
What do you need to understand about Planck time? It's just defined as the amount of time a photon would take to cover a distance equivalent to the Planck length.

See Wikipedia for details:
http://en.wikipedia.org/wiki/Planck_time

I am wondering which physics' law can be applied on the Planck time. Does gravitational law and law of refraction applied to the Planck time since Planck time is related to gravity as well as photon
 


Defennder said:
What do you need to understand about Planck time? It's just defined as the amount of time a photon would take to cover a distance equivalent to the Planck length.

See Wikipedia for details:
http://en.wikipedia.org/wiki/Planck_time

I am wondering which physics' law can be applied on the Planck time. Does gravitational law,law of refraction and theory of relativity applied to the Planck time since Planck time is related to gravity photon
as well as speed of light
 

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