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Please also note that we do not accept unsolicited posts and we cannot review, or open new threads for, unsolicited articles or papers. Requests to review or post such materials will not be answered. If you have your own novel physics theory or model, which you would like to post for further discussion among then FQXi community, then please add them directly to the "Alternative Models of Reality" thread, or to the "Alternative Models of Cosmology" thread. Thank you.
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RECENT POSTS IN THIS TOPIC
Jason Wolfe: on 7/3/20 at 4:50am UTC, wrote Have you considered that the spacetime continuum is made of a near infinite...
Jason Wolfe: on 7/3/20 at 1:04am UTC, wrote If we're talking about the physical universe, than I think you have to talk...
Héctor Gianni: on 7/1/20 at 22:18pm UTC, wrote Dear Lorenzo Maccone, John R. Cox, Jim George Sowdon: ...
Jim Snowdon: on 6/30/20 at 12:21pm UTC, wrote Hi Hector, May I invite you to read my most recent postings,...
John Cox: on 6/30/20 at 1:18am UTC, wrote Hector, your points are well taken. However I think it important to also...
Héctor Gianni: on 6/29/20 at 22:20pm UTC, wrote To whom is interested The experimental meaning of "the so called time" is...
Zeeya Merali: on 6/23/20 at 18:37pm UTC, wrote Hi there, I didn't realise it had been closed! It's now re-opened.
Vesuvius Now: on 6/23/20 at 18:24pm UTC, wrote Would it be possible to re-open the "The Nature of Time" forum? Research on...
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Lungani : "I Everyone I'm New here it an honour to be here and join you to share our..." in Why Time Might Not Be an...
Steve Dufourny: "Hi Mr Schindler , I d like to explain you something, sorry to be off topic,..." in Tensor networks as a data...
Steve Dufourny: "It is very important this general idea and I need help of mathematicians to..." in Alternative Models of...
Steve Dufourny: "My intuitive equation considering the cold dark matter encoded in nuclei..." in Alternative Models of...
Jack James: "I noticed this was a 4 dimensional approach also. ..." in Unification of the four...
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Jason Wolfe: on 7/3/20 at 4:50am UTC, wrote Have you considered that the spacetime continuum is made of a near infinite...
Jason Wolfe: on 7/3/20 at 1:04am UTC, wrote If we're talking about the physical universe, than I think you have to talk...
Héctor Gianni: on 7/1/20 at 22:18pm UTC, wrote Dear Lorenzo Maccone, John R. Cox, Jim George Sowdon: ...
Jim Snowdon: on 6/30/20 at 12:21pm UTC, wrote Hi Hector, May I invite you to read my most recent postings,...
John Cox: on 6/30/20 at 1:18am UTC, wrote Hector, your points are well taken. However I think it important to also...
Héctor Gianni: on 6/29/20 at 22:20pm UTC, wrote To whom is interested The experimental meaning of "the so called time" is...
Zeeya Merali: on 6/23/20 at 18:37pm UTC, wrote Hi there, I didn't realise it had been closed! It's now re-opened.
Vesuvius Now: on 6/23/20 at 18:24pm UTC, wrote Would it be possible to re-open the "The Nature of Time" forum? Research on...
RECENT FORUM POSTS
Kuyukov V. abakan: "Holography and time" in Tensor networks as a data...
Lungani : "I Everyone I'm New here it an honour to be here and join you to share our..." in Why Time Might Not Be an...
Lungani : "I Everyone I'm New here it an honour to be here and join you to share our..." in Why Time Might Not Be an...
Steve Dufourny: "Hi Mr Schindler , I d like to explain you something, sorry to be off topic,..." in Tensor networks as a data...
Steve Dufourny: "It is very important this general idea and I need help of mathematicians to..." in Alternative Models of...
Steve Dufourny: "My intuitive equation considering the cold dark matter encoded in nuclei..." in Alternative Models of...
Jack James: "I noticed this was a 4 dimensional approach also. ..." in Unification of the four...
Anonymous: "good to read this post" in The Noise of Gravitons
RECENT ARTICLES
click titles to read articles
Can Choices Curve Spacetime?
Two teams are developing ways to detect quantum-gravitational effects in the lab.
The Quantum Engine That Simultaneously Heats and Cools
Tiny device could help boost quantum electronics.
The Quantum Refrigerator
A tiny cooling device could help rewrite the thermodynamic rule book for quantum machines.
Time to Think
Philosopher Jenann Ismael invokes the thermodynamic arrow of time to explain how human intelligence emerged through culture.
Lockdown Lab Life
Grounded physicists are exploring the use of online and virtual-reality conferencing, and AI-controlled experiments, to maintain social distancing. Post-pandemic, these positive innovations could make science more accessible and environmentally-friendly.
FQXi BLOGS
April 18, 2021
FQXi's Lorenzo Maccone delves into the one of the deepest question in philosophy and discusses what modern physics can tell us about the nature of time. This introductory lecture discusses relativity, time travel, and quantum gravity.
Keywords: INSPYRE schools time quantum relativity timetravel quantumgravity wheelerdewitt
This forum thread is open to the public.
Keywords: INSPYRE schools time quantum relativity timetravel quantumgravity wheelerdewitt
This forum thread is open to the public.
Would it be possible to re-open the "The Nature of Time" forum? Research on time has not stopped and the forum could still be useful.
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To whom is interested
The experimental meaning of "the so called time" is "movement".
Time is a measuring system created involuntarily by pre-historic man, and has no physical existence.They had not other way to predict hunting season.Antropologist said that man use Time since 25. to 30.000 years ago.
"Movement" is a physical property of every physical existing thing, that's why is everywhere and afects everything.The twin paradox only posible explanation: Man metabolism imply chemical conbinations which imply physical "movements" those movements would be slower for the astronaut twin who is in the spaceship at great speed respect his twin on land; the speed inertia would make a slower metabolic life for the astronaut living slower and less than his twin on land who would be older than the astronaut is; the twin on land lived more. Héctor Daniel Gianni
report post as inappropriate
The experimental meaning of "the so called time" is "movement".
Time is a measuring system created involuntarily by pre-historic man, and has no physical existence.They had not other way to predict hunting season.Antropologist said that man use Time since 25. to 30.000 years ago.
"Movement" is a physical property of every physical existing thing, that's why is everywhere and afects everything.The twin paradox only posible explanation: Man metabolism imply chemical conbinations which imply physical "movements" those movements would be slower for the astronaut twin who is in the spaceship at great speed respect his twin on land; the speed inertia would make a slower metabolic life for the astronaut living slower and less than his twin on land who would be older than the astronaut is; the twin on land lived more. Héctor Daniel Gianni
Hector,
your points are well taken. However I think it important to also recognize that 'blocktime' itself ignores the question of 'speed of time', such that the universe is commonly treated as existing at a common rate of time without actually stating so. And Lorentz points toward the fabled 'hidden parameter', length contraction is only expressed along one dimension and there is no accepted postulate which relates density variance as an inverse of velocity. Yet even in its infancy Relativity can account for the seemingly paradoxical behavior of radio-isotopes surviving billions of years of interstellar space in the extremely low gravitational potential at which non-relativistic theorizing would require decay rates to accelerate.
I like to think that we haven't yet scratched the surface of reality. If this topic catches on, I'm certain only that we will all end up thoroughly 'scratched'. best wishes jrc
this post has been edited by the author since its original submission
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your points are well taken. However I think it important to also recognize that 'blocktime' itself ignores the question of 'speed of time', such that the universe is commonly treated as existing at a common rate of time without actually stating so. And Lorentz points toward the fabled 'hidden parameter', length contraction is only expressed along one dimension and there is no accepted postulate which relates density variance as an inverse of velocity. Yet even in its infancy Relativity can account for the seemingly paradoxical behavior of radio-isotopes surviving billions of years of interstellar space in the extremely low gravitational potential at which non-relativistic theorizing would require decay rates to accelerate.
I like to think that we haven't yet scratched the surface of reality. If this topic catches on, I'm certain only that we will all end up thoroughly 'scratched'. best wishes jrc
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Hi Hector,
May I invite you to read my most recent postings, which are in the `Nature of Time` forum.
A convenient link to it is in Zeeya Merali`s posting, which is located immediately above your own posting.
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May I invite you to read my most recent postings, which are in the `Nature of Time` forum.
A convenient link to it is in Zeeya Merali`s posting, which is located immediately above your own posting.
Dear Lorenzo Maccone, John R. Cox, Jim George Sowdon:
If you really want to know now and forever What is Time?, I don't think you regret doing it, read my collaboration in the current FQXi contest: “No knowing Time definition and experimental meaning, Force physicists to theories creation, that make Physics Undecidable, Incomputable and Unpredictable, by Héctor Daniel Gianni.
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If you really want to know now and forever What is Time?, I don't think you regret doing it, read my collaboration in the current FQXi contest: “No knowing Time definition and experimental meaning, Force physicists to theories creation, that make Physics Undecidable, Incomputable and Unpredictable, by Héctor Daniel Gianni.
If we're talking about the physical universe, than I think you have to talk about time and space together; at least that's what special relativity tells us. I never read any discussions about why the speed of light is invariant for all observers. But because it is, effects like time dilation and length contraction are proof that there is no single clock or absolute ruler that governs the universe.
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Have you considered that the spacetime continuum is made of a near infinite number of quanta "gravitons", all of which have a built in clock and measuring stick.
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