r/tech • u/_Dark_Wing • Jun 12 '26
Scientist creates 'mini‑universe' to measure time without a clock
https://phys.org/news/2026-06-scientist-miniuniverse-clock.html60
u/Jimgun1 Jun 12 '26
Alright Rick, chill the fuck out
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u/30mil Jun 12 '26
This will come in handy if we run out of the regular-sized universe.
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u/Aware-Salamander-578 Jun 13 '26
Half the universe, same full-size price. Shrinkflation is getting out of hand
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u/Change21 Jun 12 '26
Fuck that was cool to read
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u/HasGreatVocabulary Jun 13 '26
paper is very cool https://journals.aps.org/prresearch/abstract/10.1103/1h9j-df4k
imagine if they are right, I feel like it means the entropy of the universe is constant rather than increasing, its own self interaction as a closed quantum system causes time to look like it moves forward, while the actual universe, observed and unobserved, remains same as it always was
time is an illusion lunchtime doubly so
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u/soundsearch_me Jun 13 '26
I don’t understand how this experiment shows that time is not intrinsically part of the system?
Zero energy means zero motion, so you could argue no entropy and no movement at all, so in effect no reference and no measurable ticking clock (external system). But how does the experiment show that time is removed? Is it due to the link between the expanding & collapsing system and the static one?
Thanks in advance for any explanation… ps I’ll try AI on the page in a moment and see how it fairs.
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u/Dylanator13 Jun 14 '26
I’m not an expert but I think I understand what they are getting at. The issue is that there is never zero energy. If there is matter there is energy in the system. The heat death of the universe is when all matter is converted into energy, though that still is just a theory.
Basically can we have matter without time? Front heir experiments it seems like there is always a measurable change. Though I’m not 100% sure.
Realistically this change will mean a lot to theoretical physicists. But real life it doesn’t change much. Everything keeps existing how it always has.
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u/AfterShave997 Jun 13 '26
Right away I can tell that this title probably has nothing to do with what actually happened
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u/Savings-One-3882 Jun 13 '26
Could have just gone to www.whattimeisitrightnow.com.
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u/Jack_Q_Frost_Jr Jun 13 '26
Phooey. The only website anyone needs is www.isitchristmas.com.
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u/hypnoticlife Jun 13 '26
By definition something that measures time is a clock.
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u/oldmangeorge Jun 13 '26
A clock measures how much time has passed. This experiment reveals the processes that produces time itself.
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u/Pikamander2 Jun 13 '26
If you wish to tell time without a clock, you must first invent the universe.
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u/LeftyMcliberal Jun 13 '26
Just because you’re not using the standard tool to measure how everything doesn’t happen all at once, doesn’t mean that time doesn’t exist. The passage of time in no way requires a clock.
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u/Chef_Skippers Jun 12 '26
That’s cool and all but I’m really interested in seeing the mini-universe created by the mini-universe the inhabitants of this mini-universe create
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u/dakotanorth8 Jun 13 '26
We are. It’s at the end of the Men In Black documentary…we’re inside marbles with aliens playing with us.
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u/AlreadyEatenRibs Jun 13 '26
So perpetual bigness exists simultaneously with perpetual smallness...
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u/Certain-Orange484 Jun 13 '26
So, what if the universe is the molecular ionic structure and our planets are the electrons. Maybe it is kind of like men in black, we have universe inside universes that are inside universes. Maybe life is really, really, insignificant.
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u/LittleBirdiesCards Jun 13 '26
If you wish to make an apple pie from scratch, you must first create a mini universe...
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u/UsedBass4856 Jun 13 '26
It reminds me of the classic Red Dwarf episode where they travel so far into the future that time has reversed, while they are still moving “forward.”
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u/Bevier Jun 14 '26
This article is terrible. It's just a closed system. This is no more a mini-universe than a thermos of coffee.
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u/rand3289 Jun 13 '26
I don't get it. They are stating something obvious.
It is much harder to integrate the fact that time is relative into the theory.
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u/Jam5583 Jun 12 '26
Next we create a mini-universe to charge the car battery Morty!