Scientists Just Redefined the Kilogram
2024 ж. 16 Мам.
409 698 Рет қаралды
For the last 129 years, the kilogram has been defined by a shiny hunk of metal called the International Prototype. It’s the thing against which every scale is calibrated.
Not anymore.
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My drug dealer bout to be pissed
Romero 😂🤣🤣
Get outta here police
DEA open up!
Next time i'm gonna ask did you use a scale calibrated by the international prototype or planck's constant? lol
I was just thinking the same thing. Also who gave them the power to change it ?
"I got 9 inches baby!" "You lied!" "I just redefined!"
23cm sounds bigger than 9 but it's still 9 inches
Here comes the shenanigans. Hahaha
@@mkzenthusiasts It actually is bigger if "you're not into the whole brevity thing." 🤣
Did you just use imperial measurements?! Reeeeeeeeeee!
@PhyZeik ???? Your dumb
I feel like there’s something missing from the explanation of what’s replacing the unit of measure. No one actually explained what plancks constant is, how it’s used as a unit of measure. It would have been helpful to better understand why it’s a more appropriate replacement by explaining how it’s a constant measure. I searched Wikipedia & found this gave me some more context. To understand what it all means: Value The Planck constant has dimensions of physical action; i.e., energy multiplied by time, or momentum multiplied by distance, or angular momentum. In SI units, the Planck constant is expressed in joule-seconds (J⋅s or N⋅m⋅s or kg⋅m2⋅s−1). Implicit in the dimensions of the Planck constant is the fact that the SI unit of frequency, the Hertz, represents one complete cycle, 360 degrees or 2π radians, per second. An angular frequency in radians per second is often more natural in mathematics and physics and many formulas use a reduced Planck constant (or Dirac constant[citation needed]) (pronounced h-bar)
Arjun Adamson thanks, I appreciate the information.
Yeah sure Let’s listen to you not the smart ass people in the video
Thanks. I thought I had missed that part.
*Ţяэßş ŢдќєŞ™* ...¥øų Ļøşţ mę ąţ "ĦęĻĻø".
Yeah it seems crazy to me that 2.2 pounds can all of a sudden just magically be Planck’s constant for the new kilogram… It still makes no sense to me.
To people in short: That 'prototype' over time will experience decay at an atomic level and therefore the mass will decrease. However plancks constant is a universal constant which therefore will never vary over time
Thank you. Damn the video
Spread this message of love!
Wait, you mean people don’t know about radioactive decay? Shocking....... lol
🐱👍
@Adam RS Oh wow, you explained it so simple and in a way that everyone can understand now. Thank you!!!!
For those who are a bit confused maybe I can offer some help. Planks constant (h) is a fundamental constant in physics. When I say fundamental, I mean that it is absolutely vital to nearly every measurement and aspect of quantum physics. It is also a value found in nature, similarly to how the atomic radius of hydrogen is a set length, so is planks constant. It was originally written as E=hf to describe light (photons), where E is the photons energy and f is its frequency. You can think of planks constant like pi. Pi relates the radius of a circle to its circumference, and planks constant relates energy to frequency. The second thing that is important to understand is that the kg defines the plank constant. Without the kg, planks constant is undefined. The previous block of metal that we used to define the kg has an uncertainty in its value. Particles can evaporate off the surface, it can heat up, etc. Lab measurements are becoming so precise that they can measure planks constant so accurately, that the uncertainty in the kg block places a limit on how well they can know planks constant. So what is the solution? Instead of letting the kg define planks constant, let planks constant define the kg. And since planks constant is fundamental to nature and found everywhere, every scientist in the world can have access to the definition of planks constant, instead of going to Paris and find a block to measure it. Now as scientists perform more experiments and can more accurately write down all the digits of planks constant, the definition of the kg gets better and better too.
Thank you. Makes total sense. Great explanation :)
This could have been shortened down to 2-3 sentences. I guess you were not intelligent enough to do so.
But if kg defines planks, and planks define kg if we removed the actual item that weighed exact kilogram then when aliens asked how they know know or be shown what a kilogram is they would have to go through the process of the metric system.. or just show them the link to this video xD
The only thing I'm confused by is the host, what is that thing?
@@heli0s101 yes I was thinking the same thing
This could be a good thing for my weight perspective.
you people have a great humour
I know this is a joke and I'm going to get "r/whooooooosh"ed for this, but this change doesn't affect daily life whatsoever. These changes were made in such a way that there would no changes, if any, to how one carries about daily life.
@@declannewton2556 it pisses me off thaat the americans and their sports don't use the metric system that much.
It is not weight, It's mass. If you're saying weight, that means you are adding the mass to the gravity of this earth, hence the weight=newton (N)
@@canonisensys1653 yeah me too
Great job Vice. They redefined the kilo and you talked for six minutes and didn't explain it at all. Fail.
@charles sanchez then please explain what the plank constant is, how it came about and WHAT IS ACTUALLY CHANGING ?!
Yeah. I got to the end and I was like: What just happened? Did I miss anything? What are they replacing it with? So what were they talking about for 6 minutes? 😂
I thought those earrings were her hair.
I had to go back and see what you where talking about... wow good eye
What earrings ?
Mike Coffin is that a woman?
I think the same
@@joe972 You are getting the wrong women bro. He is talking about the redhead not the one with the boy cut.
Americans: SCREAMS IN CONFUSION
Ya, cant wait for the US to get on board with the world.
The irony being that the imperial weights they use officially derive their definitions from the kilogram!
@Iso Gh0sted Still does not stop the fact any plans need to be laid out in both Imperial and Metric system.
I only know kilo in regard to COD
nanfoodles that would take over 100 years
I still don't understand wtf is the new kilogram
@The one you love to hate The old kilogram was a hunk of metal The new kilogram is a butt load of science based off of the smallest particle we know of
The same as before. Nothing actually changed at all we just rewrote a part that was quite inconvenient to be based on a natural constant. For an easier to understand example just take a look at the meter. At first it was 1/40000000 of the earths circumference. Then we measured the speed of light and got 299792458 m/s using our meter. Then we figured out that the circumference of theearth, while not really changing much, is not natural constant and it would be nicer to deefine the meter using something that always stays the same and can be found anywhere in nature. Luckily we already measured the speed of light and now the meter is 1/299792458 of the distance light travels in a second. The same with the kilogram. we measured the planck constant using the kilogram as a unit and now we can in return define the kilogram using that constant. Measurement is usually done using a kibble balance but that is a little bit too much to explain here.
Krawallnoez Noezington I was about to say that!!!
Veritasium did a great video about this a couple years ago or something. So i highly recommend looking on his channel (might be called "the world's roundest object" or something like that) He really explained well the problems with using an "object" as a unit of measure. So its exciting to see the end result now, moving away from a physical object and into an unchanging constant.
@@__Andrew he did another vid about this when it first happened as well
_Same Same_ but *D I F F E R E N T* *_BUT STILL S A M E_*
From the interview?
Do you ever feel.... Like a plastic bag... Drifting through the wind.... Wanting to start again?
They hate us cos they ain't us.
Are you honeypotting!?
Those are fake glasses...
So, they didnt actually change the weight, they just implemented a mathematical formula for determining the same weight without having to resort to a physical standard, right?
That's my understanding as well. What is the formula with planck's constant?
Finally a smart comment
The physical one would change in mass constantly so it was inaccurate. Therefore, the mathematic value for kg was BORN!
Wrong, they all got to get together for nerdfest and unanimously congratulate themselves for being experts in something completely useless. Everybody gets a trophy and pizza, but mom is still allowed in their room.
They did. Because 1 kilogram is no longer the mass of the kilogram. Previously of the kilogram lost mass 1kg would become lighter.
Will this effect cocaine production ?
Not at all.
@@MrWolfsDen You're exactly right!!!! Lol
meth is the only thing effecting cocaine here. everybody switched
@@MrWolfsDen yep illegal drugs are the worlds # 1 commodity. nothing comes close to the profit margins of cocaine or heroin. in reality worth about as much as flour but by making it illegal is worth more than its weight in gold. and if the US will invade a country for oil....damn right they want a piece of the pie
Not in Columbia.lol.
We call them bricks 🧱 in Chicago
C caymer Mayate.
Nobody asked you imperial boi
@Edwin Urena lmao
Bricks birds Whole Thangs Slabs On bro nem😜💯💯😂😂
@@bawsnitti ON GD
Aliens: "Hey Humans, how do you define mass?" Humans: "Hey Aliens, our planck constant has this value." Aliens: "What the hell do you mean by planck constant? Where is your universal unit sample?"
If they don't know what the planck constant is they probably arent worth talking to.
Actually, the Planck’s constant would make it easier to communicate kilograms to aliens. 12 year old kids - don’t woosh me, I know it’s a joke, I just thought I’d point that out
I think you don't get the point :). We don give the planck constant a value, we call "planck constant" to a constant in nature. Another to illustrate this, for instance, is the speed of light. If an alien asks, how much is a meter? Your answer is, "you know the speed of light in vacuum right? Well, it is X fraction of it." These constants don't change, and therefore, are perfect to base on them the measuring tools for everything else.
@@philipellington5340 r/woosh
I love hearing about news like this! Keep it coming vice. I would like for y’all to focus on a lot of conferences regarding science and getting the insight on them
If you didn't understand WTF is this all about here is a short explanation: - A kilogram is a standard metric unit for measuring weight. 1 KG is about 2.2 pounds. - Kilogram was internationally accepted as the weight of this metal ball, locked away and is forbidden to touch. (This metal ball is equal to 1 litre of water which is the amount of water you can store in a 1m x 1m x 1m cube. Point is it is not random.) - Now they have built a new way to define kilogram, using Plancks constant. The benefit is that it is artefact free, which means even if we lose the ball, or everything for that matter, we can still define how much is a kilogram and can tell if an object is a kilogram. Which means we can measure the weight without needing a ball as a reference. How do they use Planck's constant to define weight? I have no clue. Let me know if I got something wrong in the comments and I will make the edit. Like it so others can see.
But they're both a kilogram.....
Just reminded me of the guy that has trouble understanding the difference between a kilo of feathers and a kilo of metal
For now but in 10 years the kilogram artifact could weigh 0.000000001g more or less which if you consider the weight of a planet or something, could be significant
Limmy!
@@sophia.lb95 that was my first grade math problem on every test : which is heavier, a kilo of iron or a kilo of cotton.
The old kg is based on an object locked away in a vault. The new kg is based on a natural constant (Planck's constant) using a well defined measuring device called a Kibble balance. So now you can derive Planck's constant from first principles, take the definition of the Kibble balance and definition of the kg and reproduce the kg anywhere to 10 decimal places. And the new definition will never change over time whereas the object has already lost a few nanograms since it was created.
Nobody : US of A: MUH EMPIREAL UNITS
yet, defined by the SI system...
Indeed 😏
They are busy talking abt a wall
There’s only one unit of measurement that landed a man on the moon
Canada uses Imperial as well; pounds are used everywhere, as are inches when meters are too big and centimeters too small.
That male reporter has a really light voice.
you didnt explained the new kilogram
G R. Because the reporter and producer did not understand it. The original math in the 1770s was flawed. The Earth circumference is not divisible evenly by metres. Therefore every other measure is based on a conceptual flaw of pre industrial amateur naturalists. SI works but the base standard is still different ways to get to the intended base, which itself was flawed. The metre became a US atomic energy commission measured wavelength after WWII. Thus the kg is now similarly based on natural physics mathematics of Plank's constant.. In reality that was an original intent, just the science was off due to miscalculating the circumference of the world. So, in reality, no measurement system today is any more or less accurate than the other. Been that way for a couple of centuries. The purpose of subdivision is the only difference.
G R - There are other places where the new method is explained. Not everything has to be a science lesson. This is just a news item.
In the video you say 143 years. In the description you say 129 years. Which is it?
d add them up and divide by two
@@angelgjr1999 genius!
skiboot steeze boot 137?
skiboot steeze boot my bad, I see it’s 69 now. LOL
d Just redefine 143 years = 129 years.
What's that thing that's asking all the questions? I'm confused.
y'don't say...
I think its not a he or a she. You would probably need to ask it before assigning it a pronoun.
Is it still worth a Kilo though? Someone explain in simple English.
Yeah, we are on the same boat here. The video does not explain whether the alteration to planck constant also changes our previous believe that 1kg equals 1000gr.
So basically the kilogram went being defined as a physical object into now an artificial/ intrinsic value.. that's correlated into an equation. correct me if I'm wrong
i think plancs constant is based on the smallest measurement of matter mankind can come up with. in my humble opinion.
@@KevinP32270 so it is an defined using an equation?right??
@@3in140 verified equation. The research shows that's as small as its gets before the quantum world where everything goes nutz. In my humble opinion.
@@KevinP32270 Thankzz for that info...😍😍👍
@@3in140 you are welsome sir. but please don't take my word for it. lots of videos on youtube about it. be well.
TLDR: The new kilogram remains equal to the old. So what changed? The definition. Huh? EARLIER: It was a single piece of metal. So, the reference was a physical object. NOW: It is a calculation. Based on a universal constant number. What number? The Planck's Constant. How does the number give me the value of Kilogram? Not explained in this video. Don't blame yourself.
You forgot to explain wtf the new kilogram actually is made of and why it is so genius and "easy" to replicate for anyone.
If 1 kg is 9.8Newtons which is 10 Trotskys, 15 Lenins, 100 Ches, 30 Stalins, 50 Castros, won't their numbers change as well?
What.? Huh
pls be a troll, pls be a troll, pls...
No
Technically no
Still waiting for US to change from Imperial to Metric... I feel like an idiot when I leave the US....
As a non-American I still don't understand why you guys dont use the metric system. Soooo much easier
@@SkullCrusher-xk5wp hey no questions! Just keep bowing down
As a Canadian who spent 4 months in the US, I once had a deep discussion with someone who didn't see the point of the metric system, she was a massage therapist. Without being condescending, I told her, she wouldn't. It would have little affect on her life, other than the units she used to measure but it had enormous impact on engineers, physicist, biologists, manufacturers, even pilots (#Gimliglider). Now that I work in construction in Canada VERY close to the US border, I tend to work in both units. I'll often be given a drawing in ft/in but have to order concrete in m3. It's interesting. I learned metric in school, but physical, to my eye, understand feet/inches faster, but metric is WAY easier to work with. I once asked a US engineer what is better, and they said, nothing else really makes a difference other than the feet/inches.... which I agree with, because it SUCKS to work with 2 units, to do the same thing. Computers have made it easier. But metric gives you an answer in mm, where my tolerance is greater than a mm. Feet/inches, means there is a possibility of a mistakes to be made with two systems in use. Multiply/dividing feet/inches... there is always an easier possibility of a mistake compared to mm.
Did the US use imperial to defy Great Britain many years ago?
@@pinktacogang Well given the UK is why it's called Imperial Units, I'd guess not. But perhaps to defy France, seen as the metric system is their invention. Likely though, it was a problem of states not adopting it, the federal government can't force them, and rather than have a fragmented system where it can vary state to state, they just stuck with imperial. It'd be nice if they let it go and used the system the rest of the world uses, but in this day and age, it'd be seen as some one world government move or an attack on free speech or some other nonsense, so best leave it for a while.
Yes. Even your pound is based on Kg, Americans. When are you ever going to follow the rest of world and accept S.I. unit?
NEVER
@@nlh719 Pounds have been based off of Kilos for a long time now. You can't do a precise measurement using something like grain.
We don't believe in education over here, we prefer indoctrination!
Yes, @nlh719. Inch is based on 3 barly cornes back to back. How fantastically accurate way of measuring things. Joke aside, all imperial units are just multiplier of S.I units.
But Americans love the agony of messing up measuring system units and thereby plowing $400 million Mars orbiters into the Martian surface.
Wasn't this done a while ago now?
Meanwhile in US elementary schools: "what the f is a kilogram? Pound baby pound!"
Kilograms and stone never pounds
Pound, unit of avoirdupois weight, equal to 0.45359237 kg. That is how the pound is defined. This means that any change to the kilogram is also a change to the pound.
The world: changing kg to plank constant USA: Hold my Ounces and Lbs🙇
Kibuigut Barsirian Kenduywa Arap Sing'oe *Planck
We have grams and kilos too lol. Funny how the rest of the world doesnt understand that we use both. Its the rest of the world that only uses one. Yet we found precision technology using both. Rip.
Well, interestingly, since July 1, 1959, the pound in United States has been defined as exactly 0.45359237 kilogram. So in a way, United States is already using metric, albeit in a rather roundabout way. Source: www.ngs.noaa.gov/PUBS_LIB/FedRegister/FRdoc59-5442.pdf
It makes sense, why not have a constant measure be based on a constant of the entire universe.
The issue was that we couldn't measure Planck's constant before now.
QMILLO - Actually, Planck’s constant is not that fundamental, because it has units. You can’t just tell an alien we use that number. You first have to explain how we measure time from an atomic phenomenon. Then you have to explain units of energy similarly to get the actual number. Of course an alien would understand that the units are arbitrary and would see that the method depanded on the relationship between mass and energy, which is the fundamental principle.
The interviewer seems really cool :D
Thanks for telling us what the new standard and definition for the kilogram is.
*Plot Twist:* One of the key holders for the vault died at age 87. There was no way of getting to the original prototype so we had no choice but to redefine the kilogram.
😂😂😅
You could start a new conspiracy movement 😂😂😂
I'll tell you who got the keys🙋.... 🗣️🙉DJ Khalid!
Nothing about the watt balance, and the F=ma derivation it comes from? Verisatium has a better video on this.
Oh cool, I was disappointed that they didn't really explain much here
Chris Brown - This is just a news item.
I'm still unsure how they're going to implement the change and what that means for current measuring devices anyone know?
Where is the explanation of the new kilo? It would be nice to know how it works.
I am more curious abt that women's gender
@I'M A NOT-SEE I didn't mean to offend any one I was just sarcastic Hope you dont get me wrong
So how much does a kilogram weigh according to plank’s constant? It was a 1000 grams before but now it is?
It's still the same. The old Kilo and the measurement using the constant are the same but while the Kilo can change trough wear and tear, use, temperature and all of that stuff. The measurement using planck's constant will stay the same.
1 kilogram is now equivalent to the energy of a photon with the frequency of 1.35639274 x 10^50 Hz.
More practically, you can weight the kilogram against a magnet with a particular strength.
didnt vertasium made a video about it too? quite a while ago?
“what’re you going to get a tattoo of?” my man gets planck’s constant engraved on his arm
03:36 well geee, I wish companies would implement this high of security to guard personal information...
Why would they do that? They make more money by selling it
She pronounced Versailles with a French accent, but how does she say "Shetland"? I thought so.
Isn't she from Quebec?
Is it a she?
airhab airhab It's a joke based on a TV show. I'll let someone else explain it.
I’m so glad somebody finally figured out how a kg is.
I wonder how many scales had to get recalled or recalibrated. I wonder how many devices in stores are outdated.
As a mechanical engineering student I have to say that the effects of this redefinition are so negligible that you need to be a real physics nerd to get excited about this.
the effets aren't just negligible. There actually are none at all.
Just because direct impact is negligible doesn't mean actual impact is.
Fight! Fight! Fight!
That's by design. If the effect of the redefinition on actual measurements were non-negligible, it would mean they had done something horribly wrong. As a mechanical engineer, I think it is *wonderful* that we have officially decoupled our system of units from being dependent on any single (alterable/damageable/losable) physical object. This is the right way to define a system of units, and that's important to engineering and science as a field. Just as it is important for any individual engineer to realize that the vast majority of the time, the sane, pragmatic way to make an actual measurement is against a calibrated standard rather than the fundamental definition. Making appropriate approximations to simplify the problem (like measuring against a calibrated object rather than a universal constant) is a vital part of engineering, but so is recognizing that they *are* approximations so that you recognize circumstances where the approximation may fail (like the ways that a physical object might change and thus change your measurement of an important unit).
oh, oh, yeah... well my pocket protector is cooler than yours!
Is that a pun? You need 3 keys & a code to get a Kilogram?
THE kilogram
Plank's constant is the ratio between the energy of a photon and it's frequency. E=hv where E is energy, v is frequency and h is Plank's constant. this number is true for all photons, everywhere, at all times and is the same no matter what units of measurement are used - like Pi. and to be fair, our first contact with aliens is much more likely to be about Pi than Plank's constant :)
1:55 That tat is pretty cool actually.
Aliens may understand it but what about the rest of us?
It doesn't effect you in any way. The kilogram is still the same in any practical sense. It only makes a difference to the people that build scales.
The point being that this report did little to explain the actually change, except to say that a change occurred. That’s where our “journalists” have set their own bar these days.
Bodhi1satva - It’s just a news item. Not everything needs to be discussed in the manner of a graduate level physics course.
Good job Vice. You actually reported on something with actual science!
Which one is heavier? A kilo of cotton or a kilo of steel?
So what is different btw K and K ? Weight different or just different way of calculations but weight are equal?
Perdi: we re redefining the kilogramm Vice dude: iS tTHat a HUge deAl???? bruh
xD
The United States over here like.... And?
The Pound is defined by the Kilo. This affects the US just the same as everyone else (Not at all in practice).
The pound is just a multiplier of the Kilogram, so the pound was also defined based on the International Prototype and is now defined by the new constant.
It's a great thing to go from object to idea. The growth these things bring could be immeasurable.
That's one hell of a tattoo
The cartels have left the chat....
Best comment by far 😆
Cool Vid. I like these nerdy things. I like to learn for some reason.
Does anyone knows how much is the difference in New one & older one..?
Responsibility and they do it playfully. Its beautiful what smart people in our universe create and follow. An odd imaginary idea, and yet brilliant.
I remember watching Orange County Customs and they would argue if its 1/23 of an inch or 27/145 of an inch
Drug Dealers worldwide take notice!
0:45, Guessing the drape matches the carpet
Which heavier *a kilogram of stell or a kilogram feathers*
garbage video , didnt explain what the measurement shifted to lolol!!!! watching veritasium now!!!!
I thought it was just me. I thought I missed something. Do they even know........
I have only one unimportant question...is the interviewer a man or a woman?
Lesbian Woman.
A she he.
Yes. Seriously, though, does it really matter?
I wish these videos would go into more of the technical details of how the "new" kilogram is defined. "Based on plank's constant" is not a sufficient explanation. I learned as much from the Video title as I did watching the entire video.
It's a news channel, not a science explaining channel, there's plenty of videos about this very topic on youtube, go find them if you're genuinely interested and not just bitching because you think the news should go in to the minutiae on every single topic.
@@Halokon, Expecting an explanation, and complaining about what is essentially click-bait, isn't unreasonable.
@@jessstuart7495 But it isn't clickbait, they were reporting on the event, not on the minutiae. Point to a single media source that isn't scientifically focused that has explained it. You'll be looking for a while, but you'll also be looking at a site very few people use, because unless your focus is science, that level of detail isn't necessary. You could accuse absolutely every news source or even social media of clickbait if your argument is that they never went in to enough detail for you. Political news doesn't tell you every single line of a bill, your pregnant friend doesn't explain the conception etc. If you want to know how they actually use the formula, you are more than equipped to go find out. The news has always been a start point for knowledge, a catalyst that sends you to find out more, not an end point where you should expect to get everything and then not look further. Honestly, it sounds like you just hate Vice and are looking for any reason, be it politics or not being a science channel, to lambast them, which is pretty pathetic if it is the case.
That a real gangsta tattoo the physicist got there.
"Muricans: Kilogram who??
Other then the bad haircut....she's a great journalist I'll admit
Pretty happy with the pound atm.
So the rotation on time earth can be changing anytime soon?
Hey NASA remember when you forgot to convert the metric measurements and ended up costing $125 millions? Good going doofus.
Will this affects my girls weight?? Is she heavier or lighter now? 🤔
The actual end result will be the same, so it's just 1x whatever she weighed before. So 1x0?
1. This happened yesterday. Or rather, the decision came in effect yesterday, the vote was last year. Vice's video is late on KZhead, as usual... or rather, it seems it's a repost; 2. None of the examples given really calibrated their scales with the International Prototype. The change only really potentially affects labs and manufacturers of extremely precise scales and whatnot. It's still significant, to be clear, a decision that had to happen for the betterment of science - but the video is overselling it a bit; 3. The standard for measurement of the Kilogram has changed, but the value for the kilogram itself did not. And I'm not sure if this came out clear enough. Planck's constant was used in such a way to coincide with what we consider the Kg today. So it's not like something that weighted 1Kg last week weights something different today - it's the same thing, the only thing that changed is how exactly we define that. The general problem of having a physical object defining what is supposed to be a constant is that even if you use extremely inert materials and keep it at ideal conditions, it's still gonna change overtime - which makes it NOT a constant. So, the Kg has deviated over the years... an imperceptible ammount, but it did. Micrograms. Which is impressive in itself given it's history. People talking about it not mattering because in the US you guys use pounds. Well, a pound is defined as a fractional value of a Kg, officially. So it still matters. About the meter, it's another example of unit of measurement that was changed to fit a true constant - the speed of light. A meter is nowadays defined as the length light travels for an extremely small ammount of time... it's a teeny tiny fraction of a second. But the change happened back in 1983. Back to the Planck constant... that goes waaay over my head. It's quantum mechanics. I've seen it described as the smallest action and electron can take, if that helps. But more importantly, it estabilishes a relationship between the kilogram, meters and seconds. Since the last two are already true constants, that makes the kilogram also a constant that can be calculated using a mathematical formula. Hope this helps.
So what the definition now ? What are the scales gonna be based on ? Did i miss the answer or was the answer not provided ????
The first few seconds are just cringe.
That man is a great interviewer
I also thought he was a man. I think the hair does it.
That's a man?!? I thought it was a girl who had breast cancer and got them removed. She has a girls voice too. Also, guys do not normally have that type of nose piercing. Definitely a girl.
@sebatian Humans make assumptions all the time. If we did not, we would have died out long ago. Its perfectly normal to assume, and then ask questions to clarify.
Vice news CONFIRMS. She is a She. They call her SHE in her Biography. www.hbo.com/vice/cast-and-crew/arielle-duhaime-ross
@sebatian haha 😁 yah
How close are the 2 ilograms?
The mass didn't change, just the way we define it.
this is insanely insane
I’m so confused...any one else? I mean I did just smoke a huge vape bag of some fruity pebbles but damn I’m so lost 🤣🤯
[laughs in american]
So what exactly happened
It wasn't mentioned how the kilogram is now defined or what the choices were.
"So how many pounds is that?" - USA
We know metric as well as standard/imperial. Instead of being a biased douchebag, come see for yourself. We also have the 2nd biggest nuclear reactor for schools based out of NJ MIT. I keep trying to remember where all of your pompous atittudes come from. I suppose its lack of education about other countries. Grow up.
It's priceless. No one would sell it for even a trillion pounds.
I started watching about 3:20 and thought that was a guy OMG when it startered talking at 3:58 I was shocked !
That's why you don't start watching videos somewhere in the middle.
@@narata1541 true It was so scary
World: I’m gonna kms USA and eternal Anglo: me too
How about explaining the planks constant?
Is that a dude or female interviewing him?
Yes
Never heard a dude with a voice like that, but yes, she's a tomboy, good catch.
The whole process of getting the kg from the safe seems like something from a video game. "You need gather three keys from around the world to the great safe"
Does the weight change?
6 minutes and no explanation of how the kilogram is now defined as. Only that off the cuffs remark about the planck's constant having a specific numeric value.
the only explanation was literally off the cuff.
What of the bushel and the peck?
After watching: What is the "shiny hunk of metal" being replaced with? How will that replacement be used?
It is being defined so that Planks constant equals one particular number. It is like defining distance with the speed of light. So instead of saying 1 metre is as long as this special stick that I keep in my garage. You say: 1 metre is the distance that light travels in 1/299 792 458th of a second.
Is it still gonna be the same weight
Now I gotta go throw out my calibration weight