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- เผยแพร่เมื่อ 28 พ.ค. 2024
- Time may be a human construct but that hasn't stopped physicists from perfecting it.
Read More:
JILA’s 3-D Quantum Gas Atomic Clock Offers New Dimensions in Measurement
www.nist.gov/news-events/news...
“JILA physicists have created an entirely new design for an atomic clock, in which strontium atoms are packed into a tiny three-dimensional (3-D) cube at 1,000 times the density of previous one-dimensional (1-D) clocks. In doing so, they are the first to harness the ultra-controlled behavior of a so-called “quantum gas” to make a practical measurement device.”
Jun Ye: Let There Be Light (and Thus, Time)
• Jun Ye: Let There Be L...
Dr. Jun Ye, professor of physics at the University of Colorado at Boulder and a fellow of both the National Institute of Standards and Technology and JILA, explains how lasers are used to manipulate atoms inside and out for ultra-precise clocks.
Ultra-Accurate Clocks Lead Search for New Laws of Physics
www.quantamagazine.org/ultra-...
Atomic clocks are letting physicists tighten the lasso around elusive phenomena such as dark matter.
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"When you come into our lab, the first thing you think of is 'Oh man.'"
Anything involving quantum physics is "Oh man."
As a former technician, this level of precision just seems mind-blowing.
Antony Stringfellow why they gotta make stuff more complicated
@@myst1c164 not really, it's the best solution they could come up with
Cardinal I mean like it’s already kinda complicated and now they add in quantum mechanics and stuff. That’s the one field of science I can’t really grasp.
@@myst1c164
LOL it's like making your tax return , getting more complicated :-))
Humans can be so awesome when they're not busy being so awful.
Josh Ladgrove r/im14andthisisdeep
Money is the problem.
@@nojvaz2392 r/im14andthisisdeep
@@nojvaz2392 money isnt the problem. Greed is the problem. It's never enough
I agree you humans can be wonderful creatures when you're not fighting each other
*"What time is it strontium atom?"*
1 second probably.
Strontium atom: "Time to get a watch."
Can't tell anymore. You better ask Yterbium over there......
It's about 1:23,42672747490197263633671993858143708636852253639969464610736362522667 pm
😊
"Have you ever stopped to think what time actually is?"
Me, watching this video 4 hrs before an exam: Running out. Time is running out
*Dr. Strange approves*
Dr. who?
Evariste Galois Thanos not approve he snap
You mean hank pym.
*Dr. Strange entered the chat*
*Dr. Strange wants to bargain*
*Dormamu has left the chat*
Mr. Chao has joined the room
In ten years they will have that building of gadgets shrunk into a quantum chip in a plastic wrist watch with 7 colors to pick from selling on EBay for $8.99.
In 10 years, they’ll have to just look outside to see when it’s noon because that clock is more precise than the actual movement of Earth around the sun.
@@paaao
atomic clocks already are
In your vr universe, yes
Not really. It's still hard to imagine making a quantum computer or even an "oldschool" atomic clock portable or even cheap enough for everyone. The amount of noise reduction needed is just too much. But it doesn't matter really. The clock on your laptop or Apple Watch is already synced to an atomic clock through the Cloud.
... with batteries included.
I love how he smiles when he says they kind of use a "tweezer made of light" :) @ 4:25
Aw yea! Optical tweezers ftw!
That’s weird
@@bubble4662 What is? Optical Tweezers got a nobel prize of physics this year..
Sukacita Yeremia 👏 👏 good for you
bubble/بابل Bruh, just stop replying before you get roasted further lol
"Time changes not,
but all things change in time.
For time is the force
that holds events separate,
each in its own proper place.
Time is not in motion,
but ye move through time
as your consciousness
moves from one event to another."
36 000 BC
Very well said.
"hey Phill what's the time"
"Uh hold on jim lemme check the atoms"
I'm over here still telling time with a coil spring.
I got a quantum gas that will make you leave the room in 3 clicks.
Wow! and I thought I'm the first one to discover it.
Mmhmm😂😂
Does it work best in an elevator?
@@heesingsia4634 Nope, we don't permit to release the quantum gas in elevators, it is way too hazardous. We only allow it under professional supervision on hotel rooms, classrooms, sitting rooms, restaurants, etc where it is easy to escape. Remember, each life is important.
Manish Reza 😂
3d quantum gas clock, thats what im gonna name my kid
...and then it will become a junkie.
@@hansdumbf7608 that's a strong assumption
@@hardanalljr.3138 they might get bullied
best seeker video in a long time
so true, something else than "we MIGHT have found a way to travel at the speed of light, spoiler we don't know"
Maybe it's because it has a real scientist explaining something in a real place, instead of some youtubers with that god awful wannabe-rainbow coloured background and shit, could that be the reason?
@@PresidentialWinner Dang....
@@rolandduson2021 Those colours...they give me a headache...
*THIS* is the kind of video I would *_love_* for them to make all the time!
It's so insightful, straight-forward, includes an interview with an expert, and I learned so much about a topic most people don't know much about at all!
What the hell is that car doing @ 0:50 ?!
Lol
A asshole who tried going in a red light and got trapped
It's waiting
It's not mowing down pedestrians.
The Fast and thd Furious Tokyo Drift, but realistic
Master of optics is optimistic
you mean opticmistic ?
This is a good comment
Incredible documentary. I came here to check it out, I stayed to learn. Very good editing and filming
This is amazing!!! That you seeker for showing us this amazing process! Please keep it going!
Time is very personal. *Different places have a different time.*
Different people have a different time. Even different chemical elements have a different time scale.
This clock is a beautiful machine. Very complex. Maybe it will help humanity to understand the concept of time much better than we do now.
but what if there is no actual thing as time
Armen Manukyan that's could totally be true but... it seems that time is everywhere around us not just something in our mind. If time is not real then there is something else because it is involved in everything.
Nah humanity prefers to stay busy in country politics and religious riots
epSos.de no. Everything has the same time. However, everything is experiencing time at a different rate.
Time almost certainly exists. The thing that is tricky about time is that time does not "flow"
That is an illusion created by human perception
Redefining a kg, now redefining time. What will we redefine next???
We got mass, now time, I'll make a wild guess that force is next.
The word define
Apple pricing
@HimKioo honestly when writing this comment, I was soo close to saying that😂😂
@HimKioo haha hell yeah we are!! great minds think alike😂😤
Love it. Well done. There is so much more that people are yet to understand.
Never heard of optical tweezers until i learned it was awarded the Nobel Peace Prize this year about a week ago. It's fascinating and i'm glad to see it being used in interesting ways, such as achieving more precise measurements of time!
I'm happy to see something like this. I have a feeling that if we learn more about how time works, we will learn more about our universe. Space and time are the same thing, after all, and we know a lot about how space works, but hardly anything about time. How are we supposed to focus on the big picture when we're all focusing on one half of a whole?
This video might make a flat earther's brain explode
The fact the clock speeds up and down is the mind blowing info.
Yes time actually changes its standard depending on where its compared location.
Not only their brains😅
They get short circuted by Isaac Newton's classical physics. It doesn't take much.
@Leandro Aude You beat me. I was gonna say that.
They first need a brain xD
U underestimate their power
What an awesome dude, what a great video and I am already waiting for ten years from now.
Take a shot every time they say time in this video
Im so drunk. Shouldnt have done it
@Jonathan B
I think I'll pass. that would kill so many brain cells.
Am I the only one who doesn’t understand anything he says but still keeps watching the video? Lol
i am with u
Don't feel alone lol.
I wish you could understand what he was saying. It's beautiful stuff.
Lalisa Manoban
Probably
Groan... is it sort of like how you don't understand that dumb damsel dicks magnet comments build "cLocks" for your spread poon flaps that read LOOK HOW EASY this slag attached to me don't know what Lights or mirror reflections means. Is.. is it sort a like that😘
Oh yeah, if we have a precise enough of a clock, we can measure gravitational waves
That's fun
Why play for position if you already have it?
been ther done that.....2007? i think, VLA antenna telescope system
A very precise measurement of cycles.
Such a good channel I wish more people followed
Friend: hey dude what kilogram is it
Me: 3.21 kilograms
One mystery we cannot figure out is why female time is almost always 25 minutes behind male time....
That's one thing for sure, necessarily to be solve!
20 min in here
Wow. Some brilliant people running that stuff. Fabulous
very interesting! I wish I could be there studying this stuff
The quantum age is coming
Coming? No, it is already here.
@@jimbert50 Correction. Has begun
@@Mark-uk8wz No, it has been here for decades. How do you think lasers work? They have been around for decades, even as simple pointers. LEDs? Same thing. Transistors? Even longer. They are all based on quantum physics. Quantum physics itself was pretty much all defined in the 1930s. Since then it has just been refined and proven time and time (heh) again.
@@jimbert50 My statement above implied applying quantum physics to technology
Quantum Age, I think, will be boring, since we achieved infinitesimally unit
"A very serious matter"
I see what you did there.
2:16 for reference her saying 9,192,631,770 cycles took 5 seconds!
the quality of educational science videos today is pretty amazing
One day it'll be on my children's hand
Great grandchildren lol
@@ramade9040 lol 😂
Your kid of your kid of your kid of you kid and so on...
Then you have to copulate with Godzilla now!
Woah then ur children will love a very long life, or maybe he will become giant somehow and put the whole room on his hand😃 seriously its not that easy and unecesary to have such prescise clock on ur hand but i think u can check on the internet atomic time bcs some atomic clocs are connected (i think)
Nice to hear a true intellectual speaks after hearing so much political nonsense on the news 😂😂🤣🤣💖💖👨🏻🔬👨🏻🔬🐒🐒 Science over politic EVERY TIME 😄😄😍😍
Jacinda Lacroix lets WhatsApp I’m a nuclear physicist
@@leonmatenjwa7901 You sure WhatsApp is all you wanna do? ( ͡° ͜ʖ ͡°)
Gtfo with those emoji’s
Kim Jong Un *emojis
Leon Matenjwa What’s your Whatsapp? 😂😂🤣🤣💖💖
@1:36 The 'constant' value of relative time & space is directly influenced by your approximate position to Saggitarius 'A', that which is holding all of the galaxy together is also infuencing the standard rate of time. If you want a completely accurate measurement of time, it will always coincide with the power of gravity and proximity to the singularity determining that gravity. It's something you tune as you go, not hold as a static measurement.
There is so many projects that can be work on in this field of Time that I see !
I'm your new subscriber!
How does gravity affect this clock?
Not to mention speed. And isn't the claim of time being a "universal constant" inaccurate? 0:53
The same way that it affects every clock. Time runs slower in high gravitational fields. This affects every method for measuring time.
This is why the GPS satellites need to take into account the gravity strength at their orbital height as well as their velocity (which also affects the rate of time).
At atomic level, gravity is not important.
Gravity affects big mases.
What aboot when you leave the pull of the earths gravity and sun how will weightlessness and the vacuum of space effect the clock?
Easy because any atom emite bay that divice IT Will move în side or slow when îs move depending The gravitațional feld. BUT îs usles I belive this kinde of tehnologii. And if they tell You abauth dark matter they have secret knolege.
Nice work.. amazing..
Goodness! I actually understood. Well done brain!
Seeker what happened to the black hole photography?
rv x Processing the data, gathering more data. It's a huge deal of work, but just like you, I can't wait to see it. :)
wasn't it supposed to come in 2018, now it's almost 2019
@@anonemus2378 Yup, I have been waiting for it too, be patient, scientists are working their hardest to get this right. It's not easy ya know.
Jesus been waiting for the black hole image for months now😑
NPC#6789 Orange Man Bad lol npc 😂😂😂
All this break through tech and all the comments say is 4th?
They're middle schoolers.
😂😂😂
Merica
@@codystanley4281 murica
Etheroff f
The most exciting part about the future is that discoveries that aren't even on your radar can dramatically, and quickly, reshape the future in ways you never could have imagined. I hope I'm around for a long time because this stuff is exciting.
00:35 When I walk into your lab the first thing I think about is CABLE MANAGEMENT!!! Good lord, that's a rat's nest of cables and wires.
In the brink of an eye
Now kilograms, then Second!?
Really well written.
Good direction.
Wouldn't the best clock be the time it takes an atom of helium to expell a photon after it has been energized multiplied by a certain factor 🤔
Lol Bro no
AFAICT, the outermost electrons of atoms of lighter elements oscillate between energy levels at a lower frequency than the outermost electrons of atoms of heavier elements. (Inner orbitals -> big energy gaps + lower frequency, outer orbitals -> smaller energy jumps + higher frequency.) Helium atoms would be more _convenient_ to work with, but its electron oscillations would measure time more coarsely - they would "tick slower", which leads to bigger "rounding errors" in measurement. For the most precision (the smallest "ticks"), you want a fairly heavy element/isotope, with at least one spot free in its outermost electron orbital - but not _so_ heavy that spontaneous atomic decay becomes a serious issue.
HaloInverse so that’s how they ended up with strontium?
@@HaloInverse the time it takes a helium atom to expell a photon assuming the conditions are the same would be the same always the only problem is we don't have equipment precise enough if it were the definition of the second would be something like the time it take a helium atom to revert to it's ground state after being energized with x number of electron volts when the helium atom is suspended in a temperature of 273.5 degrees Kelvin multiplied by a certain factor, this would be the most precise as helium is stable and a simpler element with less elementary particles that could screw up calculations
Edit I'm not talking about ticks I'm talking about time taken to undergo spontaneous emission
A homeless man has many ticks does this mean he's accurate?
You look like a homeless man show your true from dead meme
Hey the turrets guy is just havin a hard day don't call him homless
Small pp
Good information!👏
Doesn't slowing the atom also affect the rime which is recorded?
Plus it takes time for the signal from the reading of the atom to pass down the wires and reach the computer and so that again affects the outcome of the time shown right??
That asian dude talks like Stephen Hawking
Great
Kujo's Vision he’s a physicist not a doctor
Kujo's Vision What? The molecules of our body and the atoms that comprise them are connected through electromagnetic force, but that doesn't mean we're made of electricity.
Guys, ignore Kujo. He is either a no-life troll, or so stupid he might actually be contagious
Good Job Guys We Made Kujos Vision Delete His Comment🐸🐸🐸🐸🐸
my watch 8 minutes late and i'm just fine
Yes, but if gps satellites for instance were to be even a few seconds late, then your gps would be off by kilometers/miles.
Mine is 25min ahead. Hello from the future.
So fascinating.
This scientist is awesome. Understood everything. Give him his own show!
Lol he said, what time it is strontium atom but it cant tell bcoz its moving too fast.
Doesn't matter, Apple gonna make a better one
No they'll make a worse one but give it to you in a fancy advert and packaging so you _think_ it's better.
Pwwf more like rebrand it
I feel as though we should be talking about entropy here rather than time. In our macro world, we have a certain simple understanding of time. But at the level of precision outlined in the video, the time metaphor breaks down. When the Cesium or Strontium is excited via energy input and then allowed to settle, the clock is measuring change in entropy.
It reminds us how nature is so precise about working itself to put its value as an ever dedicated master time keeper. It simply reminds us not to waste time.
So cool☺️☺️☺️ I love quantum therory a lotttt😝😝🦄🦄
Well I don’t mind primitive clocks as they always give me extra time in bed.
That was the best seeker video in months. Also its really funny how I have heard all about this already from my father who works there.
As long as the alarm isn't annoying
0:50 you lost me!
"Time is a universal constant", relativity states otherwise!
Never been this early.
Sonam Gupta bewafa h 😂😂😂😂😂😂
great video.
Wow!! That was cool!
Omfg
My theory is that time dosent exist
Time Its just a factor set in by humans
To me its just floating particles minding their own business
just read a book about quantum loop gravity (by Marco Roveli). Quantum Loop Theory proposes something really cool that sounds pretty much like what you said. First, it argues that we can't measure time. Sounds weird, but all we are measuring is the amount of oscillations something does compared to the amount of oscillations some other thing does. For example you measure how much you lasted underwater counting the vibrations of the quartz in your stopwatch, never indicating a real time. Then, the theory of loop quantum comes into place: Time emerges from the mess of loops that create space. Time is not already there (actually it isn't in the equations of loop quantum theory) but is a result of the theory. So we could argue that time doesn't exist, following this theory (and that is just a variable that we invent upon the theory that happens to be a useful tool). Super interesting. Check it out.
Exactly! Time doesnt exist but we humans are hell bent on implying our own theories to the universe.
nah, your thinking of minutes seconds and hours, those are human constructs. Times as real as anything else though
Time is just a measurement change my mind
@@calebschwendiman9204 Then what does time measure?
Time is a construct
Ok maybe but why does everything that we know of seem to change under the inescapable guidance of entropy, which is a natural byproduct of what we call time? And the few subatomic particles that might theoretically transcend time are 1) theoretical and 2) still bound by and within time...sure, our measurements of time are constructs, but I challenge you to make a convincing argument that time itself is imaginary, a construct....
The way we perceive time is abstract or a construct, but everything is affected by time and aging. The same thing with weight, everything has mass but weight is determined by gravitational forces making it a construct.
Came to the comments looking for the inevitable tool who thinks time doesn't exist.
Sir, you did not disappoint :)
@@kevinnoble1581 that analogy is a little inconsistent...weight isn't a construct, objects do have a weight within a gravitational field that is proportional to the strength of the field itself. Our measurement of weight could be called a construct, but weight is definitely a real thing...
Time is not construct, the way we measure time is
Nice cable management, dude
0:33 Well said my dear boy, well said
My clock already works just fine
Wait what? Time is not constant!! Einstein's theory of relativity Schrodinger's cat and time dilation of all proven that time is not constant.
Simplest way to even test this was already proven to be the humble cell phone and the GPS system on board. The GPS system is nothing but a giant cuckoo clock that is surrounding us up in space that keeps accurate time for us down here. But the problem is those GPS satellites are constantly two seconds ahead of the clocks on Earth due to the lack of gravity and the high speeds at which they travel. The closer you get to light speed or the closer you get to a high gravity well the slower time gets for you even though you don't notice the change but it's faster for everyone else the closer you get to these objects. The problem with these atomic clocks that I'm saying is that they're built to operate on the only known gravity well if we can actually access that is the Earth if we made the same clock on the surface of a larger body the clock would be noticeably slower due to the mass of the planet that it is on. I'm not saying that these experiments are useless time is a needed factor for equations in many scientific experiments but it is far from constant.
Time is relative and not constant, but I think you don't exactly understand how time dilation works. In YOUR frame of reference, time feels always the same. The only situation in which time varies is when you observe someone in a different frame of reference (or in a different gravitational potential), so if you bring this clock to a spaceship, crew members will see the same results as we see in earth. So these clocks are doing their job well. What you think is a problem is the fact that the signals that they send to earth might be time-distorted. That's true, but we can compute those changes with special and general relativity so there is no problem at all.
Amazing! 👌🌟
So amazing!
i showed this video to the Flat Earthers Club, they are all in a Mental Hospital now....
I showed your comment to the president and you're getting a bravery award for most original and daring joke.
I am a fetus. Why am i watching this ...
Why did you write this ..
Obviously a time traveler....
Fascinating !!
Observable time is a universal constant. Time is a function of mass, vector, and energy. E=mc^2 Basically, everything is energy what, “matters” is the rate of change and relationships between particles.
Wtf is a crock?
Wow I’m early
This is incredibly interesting and awesome, but one observation I have as someone who knows NOTHING about what they are doing is... What affect on the experiment does the dust on the mirrors/lens' (that is clearly visible in a few shots) have on the outcome?
Good episode. Wouldn't have hurt to name-drop Arthur Ashkin, Gérard Morou, and Donna Strickland for their Nobel Prize winning work and inventions in the field of laser physics. They will pave the way for everything from time travel/manipulation to real-time cellular "pausing".
Who's the man .
Me
This clock reads the frame/cycle rate of the universe in a sense in its location. This kind of device will also be useful once its scaled down to allow us to understand time and how it actually runs in different places, like the moon for example. Compare the cycles to earth cycles and we should have moon time and we can actually calculate time on the moon and sync the earth and moon together. Another piece of the puzzle pretty much. And because of how time works. It is different all over the place. Even on earth. Time rates flow differently. And it all depends on so many things. Gravity speed mass temperature and more. Time is pretty awesome. But my favorite part is how it slows down with gravity mass and speed thanks to how it affects the photons. In all theory of course =).
Fascinating!
thank you
0:54 All I can think of is "GPS satellites, Unmanned drones, FOOKIN' LASER SOIGHTS!"
Took till the end for me to realise why they’d need to know time to such a precise scale
Ph.D scientists today, still can't touch the level of innovation of a Swiss Patent Clerk from the 1930's... why is that? They try to disprove his findings, but they can not. Nor can they beat them..... amazing. Just utterly unbelievable.....
2:12 how do they count that much cycle what instrument is able to count that its gonna be v small n yet fast how ?
It might all seem rather esoteric and sciency, but here's one (of many) practical implications of more precise time-keeping:
Rather than GPS being accurate to within a dozen meters, you could very well get GPS that is accurate to within a few centimeters if not less. That alone would be huge. Imagine enhanced-reality that could literally show you virtual footsteps of how to navigate to your target location rather than the general location. How about drones that could deliver your mail directly into your mailbox, or self-driving cars being able to have that accuracy in natigation? The possibilities of GPS accuracy alone would be nearly endless. And for astrophysicists it would be a pandoras box of new data to analyze.
How will strontium atomic measured time equate with the plank constant for example?
Light speeds are altered when passing through gasses at different temperatures so yes different places in the universe ..the propagation speed of gravity is also altered by certain phenomenon ...space time is different at many points and areas of the universe ...how to take that in to account and formulate an equation for that ...entropy of spacetime =rate of expansion of the universe xTotal mass of the universe ÷ the area squared between the two =probable space time entropy
So how does this fix any problems we had with older version of clock? And is this worth the effort?