The kilogram has changed forever. Here’s why. 

Isn't that a thousandth part of a cubic metre? Since 1 cubic metre equals 1000 litres of pure water. 1 litre of pure water makes 1 kilogram by the older definition.

U can edit videos now

Meter*

What a nerd. (Good on you tho)

why didn't you guy take the temperature of water into account? water had to be at 4 degrees C. Please provide the right fact you had two chances

Miles are also defined by meters

@@lulube11e111 Well al Imperial system units defined using Metric system units which currently after kg, all based on fundamentals of nature and completely independent from time, material and place.

Yeah, but the problem with the imperial system is working with Newtons, Joules, Watts etc, these units are based on the metric system but are still used in the imperial

@@AliceTheSpider It is still dependent on time as Plancks constant is. Otherwise, the new kilogram wouldn't have been redefined as it is.

@@cristobalgarces1675 plank constantly doesn't have a time dependency, and new kilogram is the one defined by that which is what I am referring to

el chapo

Rr

Do it quicker. If they find out you hide 1 eyelash of cocaine less, you will be in trouble

umami umami proof

We truly are the smartest nation on earth

But they're both a kilogramme

kilodamme

@@AloneInTheVoid yes sir.

#thanksobama

@@MindfulProgramming uhh that's a joke right? The imperial system has been in place for ages. Oof I can't tell with comments anymore

@@tajwarba 😂 ye

and Liberia and Burma

Bryce Bacon imperial system is defined by the metric system

worth it.

That's one of the coolest tattoos I have seen. Plus you have the constant for exams

Ikr that was really something 😂

and the guy who plucked an eyelash for the video

The team of people that made this change all got the same tattoo to celebrate the achievement

I was just about to ask if anyone know where to find that card?

Can't find it anywhere

Yes please

I was just about to write this

i was about to ask the same.

So the definition changed...

redefined*

Mozart Liessi we are special and leaders. ;)

Andriod Khan Which ironically K20 is used for pounds

@@andriod8014 yeah yeah yeah

You and Myanmar..

@@andriod8014 Leaders in overcomplicated systems

Lol good one

The us switched to the metric system, but allowed the usage of the old system. en.m.wikipedia.org/wiki/Metric_Conversion_Act

+Nils Matt Oh my god what a shocking revelation! No! I can’t go on in a world where we don’t use the customary system! I have to kill myself now!

There is mass confusing because the US uses the metric system

should've done it back when it was easy

It’s incredibly expensive, most people here prefer the metric system too. It’s just the fact that most of our laws and infrastructure are based on the customary system.

I wish America would just adjust to the metric system. It would solve a lot of problems for me so I know that the unit of measurement won’t change when I go to another country

Clarence Royandoyan Yes, but there are more people in America than 1 person, more than you.

I've heard stories of a plane nearly crashing because the same number was kept but in different units (for fuel). Another one I'm less sure of was a shuttle exploding due to different measures again.

@@lancelindlelee7256 There was an orbiter that exploded, wasting 125 million USD. It was due to two teams using different units for their calculations.

Idk all I can find is different aspect ratios of business cards. Why is that such a thing?

You could just get a screenshot

Can you make the measurement from the card?

Google it ?

I don't know but I can tell you where you can't get it. From those slow americans.

I came to the comments just for this question

yo i know right that was pretty cool but i think it was only given to those who attended the event

imgur.com/gallery/FAUdZg5 i made it in photoshop

@@Aaron-jj9no thanks

Probably due to radioactive decay 🤔

@@pranavaramanbms1609 lmaoo she was asking why they showed the clip of an eyelash being picked out, not why the prototype kilogram lost mass

In the name of Science 😥

You never done that in front of the mirror ?

It's Planck

It wasn't used to calculate the value of Planck's constant, it was to count the number of silicon 28 atoms it takes to be exactly 1 kilogram it was to redefine the Avagadro's number. Please edit the comment its frustrating.

Yes we are - also we don’t really use stones, the only non metric units we use are miles and feet (and pints for beer 🍺 😉)

I was thinking that. The UK guy is high if he thinks we use metric for everything. The rest of us know we don’t 😂

Yeah, e.g using miles instead of kilometres.

@@Rin-ef2tp why do you cling onto a stupid and unreliable unit

@@rebeccaanderson5626 I don’t know 🤷🏽‍♀️ why do Americans? I’m a scientist so at work I strictly use metric but I buy milk or beer in pints, use miles when I’m driving, I measure my height in ft and inches and weigh myself in stones because if I want to tell my friend how much I weigh they won’t have any idea what I mean if I tell them in Kilos

Thanks. Merry Xmas to you too!

wish back to u Merry christmas

Thankyou, merry xmas man

I don't celebrate it...

@@at2t1 Thog don't care

Happy to see that we go further towards perfection good to see the progress we are making

Ver.....itasium???

no..... i mean why?

Yep

@Till Schwarz By that logic wouldn't that make you and anyone else that has that idea just as ignorant? 😉

Nice

@@azmanabdula Nice

Yes, yes you are

... And a number 6 with extra dip.

@@jakobrmh Do you think anyone gets it? (420) What time is it?

Actually, the British would typically say she's 10 stone, 10. (a stone is 14 pounds, and the unlabeled unit to follow is the leftover 10 pounds.) That's one of several contexts where the metric system was unable to displace the imperial system in the UK. (Their highway signage often list distances in furlongs and miles too.)

@@TheBurningWarrior never seen this bro in uk i only saw kilogram

A kellogram of steel

I mean the spelling hurts me more than the dead meme

@@cianduffy2280 True.

Cian Duffy you do know it’s meant to Be like that?

1234 5 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uH0hikcwjIA.html

The seemingly random numbers come from the need to redefining the SI units. One tenth of a million of a meridian is nice and pretty. But when they decided to use light speed for more precision (since it's a universal constant), the conversion had to adopt those numbers.

@@jmiquelmb It's not a universal constant. The speed of light isn't a constant at all. They showed that in 2015 already.

@ It is in vacuum.

The mile was defined as 8 furlongs. A furlong was the length of a furrow a team of oxen could plow in a day. A gallon is of Roman origin and it meant "a pailful", as in, 'grab a pail full of water' A foot was the size of the Kings foot a pound came from the word "libra" (lb) and was equal to 7000 grains

Take a screenshot

But the official one

@@shrivatsakulkarni9282 make it yourself, using indesign

No but a kilogramme is a kilogramme

Nicholas Zakem no, a kilogram of steel is heavier because steel is heavier than feathers....🤦‍♂️

@@samrofik1764 what?

IceCube Gaming i see you have not been taught in the way of the kellogram

@@frederikvandrup6081 teach me your ways senpai

They already have done so. Mile and pound are simple conversions of meter and kilogram

@@Opharg but why?? They could have used the same kg and meter right??

sriHARI HS no one knows why, the people that made it like this are long gone, and changing it is incredibly expensive.

If Huawei makes a metric chip set , do you think America would accept it. 🤣

In America we are taught both but we only use imperial out of school

@Charlie K he's high on drugs, that's why he mispelled it.

@@pattrickmerete, yeah he's high on sugar

This affect has had the wrong effect ..yes. 😒 yes...I see

well, 1 kg cocain is still 1 kg cocain, if not, you still lose your head.

Extension Flexxin more precise bag of coke

Same with inches. Exactly 2.54 cm in an inch

Fun fact number two. The us officially switched to the metric system. en.m.wikipedia.org/wiki/Metric_Conversion_Act

@@lumschente Not technically. That act just allowed the metric system to be used, it didn't actually force anyone to convert. Unless at a bare minimum it becomes mandatory that anything government issued or legally binding be in metric only, it can't really be called a conversion

2:12

Planck's constant

They probably wrote down the data results somewhere on some document and published it world wide. Internet included. So there's no need to make that super expensive, extremely intricate machine yourself. It's common sense really. I mean, if everyone had to make that machine themselves. They wouldn't have voted for the change. How did you come to that conclusion?

Planck’s constant was also defined to an exact value. Same with the mole, the speed of light, the meter, and the Ampere.

Its the same thing for all practical purposes

Mass is the physical amount of "stuff" an object contains, expressed in mol. Not entirely the same thing.

@@DarkAngelEU you're wrong.

@@DarkAngelEU moles are a counting unit used to count entities,. not exactly mass.

You thought wrong.

An Otaku James received this card at the ceremony!

Verge Science is there anywhere we can buy it from?

@@winstonwei9694 used Google, did not find. Better solution?

@@winstonwei9694 bragging rights for doofus

America and counting! lol

I'd also like to know

You could just take a screenshot

@Harold Potsdamer thanks, I found that one as well, but not the latest version shown in the video.

Given this video and these cards, I bet most people still don't understand how 1 kg is actually defined. 1 kg = ?

I NEED them

Well actually the US isn’t the only county that doesn’t use the metric system

@@thatoneguy6139 now it is most also liberia integrated it now so youre the last one i would say

@@thatoneguy6139 YOU ARE THE LAST ONE YOU PATHETIC ... SO much ego can not change the units to something that is scientifically defined

You do realize we learn both and imperial units are based on the metric system, right?

Still a nice Video

The more spreading this kind of news, the better! Besides coming with the creative idea and more structured video takes time.

This is about science education, not about who did it first.

I’m surprised they also didn’t mention one of the world’s roundest objects being used to check the Kibble balance work.

I prefer this one actually.

420 BLAZE IT

No it's not... It's just denser...

2019

but steel is heavier than feathers

Mimiz dani but they both a kilogram.

@The Niggalodeon Its the same.. well technically 2019 is 50 micro grams heavier..

@@raphaellecoeur5738 what? steel is heavier than feathers... I don't get it

Yes, 1 m^3 equals 1000 L

There is a logical word for 1/10 of a meter, you learn it by going to a good school.

Modern society would crumble without it!

😁

Use /s

LOL

I see you every time I g o to the comments lol

In the science world, it is

No more than you teach them speed of light in preparation of learning the metre or function of atomic clocks to understand seconds.

wait, since when did we teach the definition of International System of Units to first grader?

they teach it in the first year of middle school ya bafoon

correct... or give them a 1kg bag of flour and tell them that's how heavy it is

I don't think it's going to be a process at all.

It's going to take many many years even the next couple of generations are unlikely to see it since it is a building block the country is based especially after the industrial revolution which means it would take a painfully large amount of money to change.

40 years ago when the U.S. attempted a move to metric, it was fought by parents unwilling to learn conversions. Today, they carry cellphones that can do the maths conveniently enough. It would be fought by nationalisit's fear of globalism now. Perhaps next administration.

@@evilotto9200 it's never gonna happen even if we wanted to it's too expensive if it was gonna happen it had to happen during the industrial revolution.

Never gonna happen

both system should stay in my opinion.

Merry Christmas

@Astir01 that's quite close , so they're just made the kilograms more if you say acceptable among all the different measuring systems.

But what basis we measure those torque and power?

@@CharDhue you have to go back to electron charge. Electron charge defines current which define voltage. Voltage and current define power and power defines torque. Meter and second is also involve. To define voltage you need a current and distance. To define current you need charge and time. Time is defined by atomic vibration and distance is define by speed of light constant.

Astir01's answer is very wrong! For starters, [J*s] is not the unit of torque, [N*m] is. Also, how long is that beam supposed to be? But even with a unit like [N * m] in there, you can't just assume that it's necessarily about torque, especially when talking about fundamental constants. Instead, take a look at the _definitions_ (not measurements) of various physical constants described on this card (the link is from one of the other comments): pbs.twimg.com/media/DsOFIXxXoAEXZJN.jpg For the definition of [kg], we need to consider Planck's constant h = 6.62607015 * 10^-34 [J * s], the speed of light c = 299792458 [m / s] and the transition frequency of a Caesium atom nuCs = 9192631779 [Hz] Now we substitue the abbreviated units by proper ones [J * s] = [kg * m^2 / s] and [Hz] = [1 / s]. Now we can construct a quantity that has only units of mass by cancelling all other units in Planck's constant: nuCs * h / c^2 = 9192631779 * 6.62607015 * 10^-34 / 299792458^2 [kg] which is equivalent to 1 [kg] = nuCs * h / c^2 * 299792458^2 / (9192631779 * 6.62607015 * 10^-34). So any alien civilization just needs to make machines to determine these constants in whatever alien units they like, and they can convert it to our units with these definitions. The same can be done for the other SI units as well.

well it will still stay around since it has been measured and documented for so long Scientists are gonna continue measure it and it's siblings for years to come for research. Long live Le Grande K.

yayyy olde weights fun my fave😋😋

This is from Hamlet, but not sure which fragment. Is it from when he grabs a human skull?