Confirming Time Dilation Without Subatomic Particles: Steven's Question

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Discussion Overview

The discussion centers around the confirmation of time dilation effects without relying on subatomic particles, exploring alternative methods such as computer simulations and observational experiments. Participants examine the validity of existing experiments that utilize atomic clocks and other particle-based measurements.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Steven questions whether time dilation can be confirmed without using subatomic particles, suggesting alternative methods like computer programs for syncing time across different gravitational fields.
  • One participant argues that computers, being composed of particles, do not provide a non-particle-based demonstration of time dilation, as GPS satellites rely on atomic clocks that are fundamentally tied to particles.
  • Another participant clarifies that atomic clocks measure time based on atomic behavior rather than subatomic particles, asserting that various types of clocks (electromagnetic, gravitational, weak-force, and strong-force based) have all demonstrated time dilation.
  • Concerns are raised about the accuracy of relativity tests, with one participant suggesting that the effects of relativity are difficult to measure at everyday velocities and scales.
  • Counterarguments emphasize that modern atomic clocks are sufficiently precise to measure gravitational and velocity time dilation effects at relatively small scales and common speeds.
  • A participant shares an anecdote about an amateur experiment demonstrating time dilation using atomic clocks at different elevations, although it is noted that this still involves atomic clocks.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of subatomic particles in demonstrating time dilation, with some asserting that all known mechanisms have been tested while others question the accuracy of these tests. The discussion remains unresolved regarding the possibility of confirming time dilation without particle involvement.

Contextual Notes

Some participants highlight limitations in the current understanding of time dilation measurements, particularly regarding the scales and velocities at which these effects can be accurately observed. There is ongoing debate about the implications of using atomic clocks and the relevance of their measurements to the broader question posed by Steven.

Ihova
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Question from a layman.

All the experiments that have been done,
muons, atomic clocks in jets, ect
All of these involve measuring time with subatomic particles.

Has there been experiments to confirm time dilation w/o the use
of particles?
(Maybe like a computer program syncing and calculating
the time in and out of the gravity well or at different elevations
over a long period of time? I know most if not all Satellites
use atomic clocks as well which would involve subatomic particles.)

I do not doubt that the math involved in confirming the results
are correct but is it possible that gravity or velocity or something else is
having effects on the subatomic particles causing the above
mentioned experiments to be inaccurate?

Inaccurate may not be the right word,
but causing the variables to be different
from what we perceive them to be?

Thanks for any info you can provide me.

Steven K
 
Physics news on Phys.org
particles are very fundamental. A computer actually is composed of and relies on particles to operate so having the computer demonstrate time dilation is akin to demonstrating it via particles. GPS satellites have embedded computers which exhibit the time dilation effect and so corrective timing is required to keep them in sync.
 
Ihova said:
All the experiments that have been done,
muons, atomic clocks in jets, ect
All of these involve measuring time with subatomic particles.
This is incorrect. Atomic clocks don't measure time with subatomic particles, they measure time with atoms.

How big a clock is simply isn't relevant. All that is relevant is whether or not the law of physics which governs the clock is Lorentz violating or not.

Atomic clocks prove that EM based clocks time dilate. Astronomical observations prove that gravity based clocks time dilate. Muon observations prove that weak-force based clocks time dilate. Kaon observations prove that strong-force based clocks time dilate. There is nothing left, all possible clocks based on any known mechanism time dilate.
 
Even with the atomic clocks, relativity hasn't been tested that accurately because the effects of the theory only affect time scales that the atomic clocks themselves can hardly read at velocities we normally experience.
 
This doesn't prove or disprove your case (since it uses atomic clocks), but it is an awesome example of human-scale amateur-accessible relativity.

http://leapsecond.com/great2005/tour/

This guy took his whole family up to the top of Mt.Ranier along with some atomic clocks to show how real GR time dilation is.
 
John232 said:
Even with the atomic clocks, relativity hasn't been tested that accurately because the effects of the theory only affect time scales that the atomic clocks themselves can hardly read at velocities we normally experience.
Nonsense. Modern atomic clocks are precise enough to measure gravitational time dilation on the scale of 33 cm and velocity time dilation at 20 mph. Furthermore, we can accelerate particles very close to c and observe their behavior in the lab. Relativity has been tested that accurately.
 
Last edited:
That is flippin' wild! 33cm & 20mph. I've always thought my feet looked younger than my hands :smile:.
 
DaleSpam said:
Nonsense. Modern atomic clocks are precise enough to measure gravitational time dilation on the scale of 33 cm and velocity time dilation at 20 mph. Furthermore, we can accelerate particles very close to c and observe their behavior in the lab. Relativity has been tested that accurately.

So short people who jog regularly live longer. Who knew...
 

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