Shortest Time Frame: Limit, Measurability, Planck's Constant

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Discussion Overview

The discussion revolves around the concept of the shortest measurable time duration in the universe, exploring its limits, measurability, and potential connections to Planck's constant. Participants inquire about the implications of these ideas in both theoretical and practical contexts.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant asks about the shortest time duration that a particular frame can exist and whether it has a limit or is measurable.
  • Another participant references the Heisenberg uncertainty principle, suggesting a time duration related to Planck's constant, specifically mentioning a formula involving total energy.
  • There is a discussion on defining time frames in relation to Planck's constant and whether events can be viewed as vibrations with specific energy.
  • A participant expresses uncertainty about the feasibility of creating a wave equation for the entire universe and the implications of measuring its energy.
  • One participant shares a link to a resource about attosecond clocks and quantum tunneling, indicating interest in further exploration of the topic.
  • A participant expresses their background in electronics engineering and a desire to learn more about physics, indicating a thirst for knowledge and clarification on various topics.

Areas of Agreement / Disagreement

Participants express various viewpoints and uncertainties regarding the shortest measurable time and its relationship to Planck's constant. No consensus is reached, and multiple competing ideas are presented.

Contextual Notes

Some discussions involve unresolved mathematical steps and assumptions about the definitions of time and energy in the context of quantum mechanics.

Hyperspace2
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What is the shortest time duration that one particular frame can exist?(between two interval of universe) or what is the shortest duration between two unique events in the universe?

Has it got limit?

Is it measurable?


If it is , to what extent it is measurable?

What's our capabilities ( devices we got) to measure them?

is this shortest time frame has something to do with Planck's constant(h)?

Thanks in advance for your valuable replies.
 
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Hyperspace2 said:
What is the shortest time duration that one particular frame can exist?(between two interval of universe) or what is the shortest duration between two unique events in the universe?

Has it got limit?

Is it measurable?


If it is , to what extent it is measurable?

What's our capabilities ( devices we got) to measure them?

is this shortest time frame has something to do with Planck's constant(h)?

Thanks in advance for your valuable replies.
[tex]\frac{\hbar}{4E}[/tex]
where E is the total energy of the universe. I forget if the factor in the denominator is supposed to be 2 or 4. Anyway, it is a consequence of the Heisenberg uncertainty principle. This is a rather short amount of time because the numerator is very small the the denominator is very large. It cannot be measured in any practical way.
 
Thank you for reply. That was helpfull.

Can you tell how can we define the time frame in the light of this Planck's constant.

can we say an event in universe is a single vibration consisting some certain energy(again in terms of Planck's constant).
 
Hyperspace2 said:
Thank you for reply. That was helpfull.

Can you tell how can we define the time frame in the light of this Planck's constant.

can we say an event in universe is a single vibration consisting some certain energy(again in terms of Planck's constant).
I hope we get a physicist involved here because I am not sure of the answer. Theoretically, though not practically, it may be that you could come up with a wave equation for the state of the entire universe, I'm not sure. If so, it would contain information about the energy in the universe, but there would be some uncertainty in the amount, meaning it would give you a range of values rather than a single value. If you were to actually measure the energy of the entire universe, the result would be one of the numbers in the range, but before you make the measurement, you have no way of knowing which one you'll get. However, I have no idea if you can identify events with vibrations of this wave equation.
 
Hyperspace,

You may be interested in reading: http://www.rdmag.com/News/2008/07/Attosecond-clock--takes-measure-of-quantum-tunneling/"

In the not too distant future I was planning a post on it, but have yet to do the hard research necessary to make it meaningful to a layman (and others like myself).

You beat me to one of the more tantalizing aspects of my digging into it.

I hope you find it useful, and that it sparks more meaningful questions and discussion by all who contribute here.

Rhody... :wink:
 
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rhody said:
Hyperspace,

You may be interested in reading: http://www.rdmag.com/News/2008/07/Attosecond-clock--takes-measure-of-quantum-tunneling/"

In the not too distant future I was planning a post on it, but have yet to do the hard research necessary to make it meaningful to a layman (and others like myself).

You beat me to one of the more tantalizing aspects of my digging into it.

I hope you find it useful, and that it sparks more meaningful questions and discussion by all who contribute here.

Rhody... :wink:

Thanks for post. I will definitely going to read your link.

I am an electronics engineering student , yet have great respect and passion for physics.

I have lot of questions and confusions(ocean of it) , and I am trying to quench my thirst.

The people like you will be beneficial for me in this forum.

Last question- are you physics student or became already physicist..?

THank you!

Hyperspace2
 
Last edited by a moderator:

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