Adam Savage's Epiphany on the Science of Measurement! kzread.info/dash/bejne/o3lrxruhoKzFkqw.html Premium/Patron exclusive: Adam builds a display case: kzread.info/dash/bejne/hptm06OHYrq7fdo.html Subscribe for more videos (and click the bell for notifications): kzread.info Join this channel to support Tested and get access to perks: kzread.info/dron/iDJtJKMICpb9B1qf7qjEOA.htmljoin

@capichow

3 ай бұрын

For some reason I looked up this World's Roundest Object! after watching your video 🏆♾️🙏🏼

@buysncharge

3 ай бұрын

​@@capichowsame. .. but I found.. well. The images were subjective

@mcwhitie

3 ай бұрын

Could we get a link to where you purchase Richlite?

@capichow

3 ай бұрын

@@buysncharge 😆

@wetbredloaf

3 ай бұрын

adam what fabric did you use for your emu hut replica also did you put cages around the shoulders

Good day, it's me, Francis Kilogram, founder of the Metric system. Thanks for the shout out! 0:56

@lanceslarock

3 ай бұрын

I heard this too.

@Olumin37

3 ай бұрын

I cant believe John Metric challenged James Imperial to a thumb wrestling match and became CEO of Measurements Inc. Such a Gamer moment in history. Shout out to John Metric!

@drfiasco

3 ай бұрын

I had to rewind to find out who Francis was, and here you are!

@brianwilson5594

3 ай бұрын

Just for a split second I accepted Francis Kilogram, yes inventer of the gram. But then WAIT A MINUTE!

@falconwind00

3 ай бұрын

Monsieur Kilogram sounds like a mascot for a French science or engineering school.

i think there is some Poetry in the fact that Adam being American is machining a stand for Le Grand K using Imperial-Calipers

@rebel4466

3 ай бұрын

People are way too butthurt about their measurements anyway. There is no superior measurement. It's about what you know and you can work with. Whether you work something to 2.54mm thickness or 1/10th of an inch... it doesn't really matter.

@Mike80528

3 ай бұрын

@@rebel4466 In an absolute sense, this is true. In a practical sense, it is far from it. Tolerances are a real thing in the physical world and the system of measurement has real world impacts on fit, especially as tolerance "errors" compound in complex geometries.

@PetermusPrime

3 ай бұрын

@@rebel4466 Err...no metric is superior, that's why the world uses it. Including the U.S.

@a-rod48

3 ай бұрын

​@@PetermusPrime So glad you feel better about how your made up scale is "superior" than other people's made up scale. You are clearly a monarch among commoners and should be praised as so. Saying metric is superior is arrogant and wrong. Measurement is a language. Saying Metric is superior is like saying English is superior, most of the world learns it after all.

@HuckleberryHim

3 ай бұрын

@@a-rod48 Your overall point is taken but metric is unarguably better (faster, easier) for converting between units within a measurable dimension. Inches, yards, miles, etc have inconsistent ratios, mm, cm, m, km are all related by powers of ten.

DUDE, I'm not even 6 min thru the video, and there are SO many good editing moments! The zoom-in on the thing Adam holds up to the camera and then the zoomed-pan over to his face when he apologizes for shouting. The French text for "address all complaints to Tested Mailbag" after he apologizes to French people everywhere. The spinning transition into the lathe and the French music playing over it to continue the bit. The text for "bandsaw noises (not found)." This work is EXCELLENT, I can really feel how the editor is having fun with their job, and I'm happy for them! :)

@joshbymyself

3 ай бұрын

a metric ton of fun

18:55 At first I thought he had fired up the vacuum pump 😂 Never underestimate his quest for authenticity.

The editing style was very funny in this video. Loved the jump cuts, various positions, crash zooms and so on. It was honestly very entertaining to watch.

@musiqtee

3 ай бұрын

Yeah, but… Adam Savage’s best “production value” will never be the most crazy tech we could imagine… …but simply his unique life experience - and the bravery of passing glimpses off to us with little held back. Thanks, Mr. Savage for being, beyond doing…!

@bzqp2

3 ай бұрын

I really didn't like the editing in this video. :( Tested had it's own editing style that was very distinct, calm and far from these tiktok-style "swoosh" cuts. They don't match. They distract. They don't work with this content.

@nokbeen3654

3 ай бұрын

@@bzqp2 yeah? Well, you know, that’s just like uh, your opinion, man

"I don't want to touch it" and keeps touching it with a dirty rag^^

@richnicards

3 ай бұрын

And then he glues it to the base in the end!?

@reneep.1978

3 ай бұрын

I think he just wanted to avoid fingerprints.

At 7:48 did you really measure Le Grand K's diameter in inches?

@LastMeteor

3 ай бұрын

Eh his Grand K is traceable to an American bureau, so freedom units are fine :p

@mm9773

3 ай бұрын

It’s alright, he used decimals.

@scaredyfish

3 ай бұрын

It's okay, inches are officially defined as 2.54cm

@WulfgarOpenthroat

3 ай бұрын

@@LastMeteor Freedom units (ie, US Customary Units) are just metric in cosplay. An inch is 2.54 centimeters in a trenchcoat.

@brionl4741

3 ай бұрын

I hear that if you do that too much you'll go blind.

Adam not polishing the glass and glueing it with marks all over it brings tears to my eyes. Otherwise a very nice build.

@falconwind00

3 ай бұрын

Seemed like he was rushing at the end. Hopefully it’s all on the outside.

@Ael666

3 ай бұрын

Have you watched this channel, do you see this man? Your words are silly...

@ccoder4953

3 ай бұрын

What had me was putting that glue on a calibrated, traceable standard. If you ever watch videos about how NIST does standards, you start to realize what a fussy sort of thing that process is.

@rjkyle

3 ай бұрын

Puts glue on the standard after making pains not to touch it. Then glues and fixes the bell jars all crooked and covered with filth. I just wish Adam would slow down a little sometimes.

@jimapollo

3 ай бұрын

yeah, like the display he made with that seperatet phone. Bubbles in the pur, not sanded and polished - good idea, but turned out ugly has hell.

Hey Adam, rather than replicas the ones in museums might well be the origional national official weights. When they made the Grand K, they also made a dozen or so 'identical' copies, from the same source material etc, all of them meant to be near exactly the same weight- then these were shipped around the world - and each of the countries they went to used them as there OWN copy of it for all their national calibrations. Then a decade later or however long it was, they brought all of them back to france to see how they still compared to the grand K, and found they had ALL diverged more than expected, and all by different amounts- which is how they realised it wasnt a very good system and needed a KG that didnt relie on a physical object. Once all the national offical KGs retired they probably ended up in museums.

@tuomasperttula3651

3 ай бұрын

It really took a lot more time than that to "get a kg that didn't rely on a physical object". The kg was redefined with natural constants only as recently as in 2019, up until that point the International Prototype of Kilogram in France was THE definition, even though the instability of the relative weights of the different copies was well known and documented.

@varno

3 ай бұрын

​@tuomasperttula3651 just to add to this, most countries will still use their prototypes as their national kg, and just calibrate it on one of them newfangled kibble balances in another country, as very few accurate ones exit.

@Will-jh4ds

3 ай бұрын

The United States petite K is still at NIST in the AML I believe. The Watt Balance is still not fully working and official. For my job I work on a 18kW X-ray source that is across the hall from the US Kilogram standard which I believe is still our old Petite K.

I used to teach High School Chemistry. My students were horrified to lean that one could (theoretically) go into BIPM and steal the the International Prototype Kilogram (like a bad Austin Powers movie) and theoretically hold the Metric System for ransom...

@2adamast

3 ай бұрын

The imperial pound was destroyed within nine years by a fire in 1834 (edit) with the imperial yard

@ulwur

3 ай бұрын

There was a bunch of "Grand K's" scattered around the world, even to the US. The were brought together every 10 years or whatever, and compared. So the loss of one would not be that bad. These comparisons was also the reason for the system with Grand K's to be replaced as the different weights weights drifted apart for no apparent reason.

@kempshott

3 ай бұрын

Just touching it would have instantly changed the mass of every object in the universe. Really!

@DanielPaast

3 ай бұрын

That hurts in so many ways😫

@MarkEichin

3 ай бұрын

Famously a much older (1793) traceable kilogram was literally stolen by pirates in transit to the US (not a targeted heist or anything, no "Pirates of the Metrology" drama...)

hey Adam (or filming team). you should ALWAYS have a 1-2 min beauty shot at the end where you see the item rotating slowly, from various angles, etc. especially after you build it for so long and we watch the video! we need the little candy at the end ;-)

@dangolfishin

3 ай бұрын

They can't cuz Adam does such a shoddy job. That beauty shot would reveal dirty glass, glue marks and crooked fittings

I worked at a company that calibrated customers measurement equipment. I mainly dealt with meters in costumers locations, but we had a workshop that had a room on springs air and humidity tightly controlled that held several Standards both physical and electronic. Really interesting to be allowed in to see just how they used them correctly.

@jakobvanklinken

3 ай бұрын

Was this difficult or fun to watch then?

Well worth the weight

@falconwind00

3 ай бұрын

I see what you did there.

@CHIPSpeaking

3 ай бұрын

Great pun, kinda...

I misread the title as "the Perfect Klingon Standard" and I expected Star Trek props.

@Merennulli

3 ай бұрын

Now I want a Klingon Kilogram. I don't know what it would look like other than "pointy" but I want it.

@pashaveres4629

3 ай бұрын

Ahh, the joys of dyslexia! My lesson has been that if it seems just too interesting - go back and reread it. It just never is the second time.

Lol the French dialogue popups from the kg and its box were hilarious editing touches. Bravo!

1:15 I love how the original glass domes have big handles at the top, even though they were very rarely supposed to be taken off.

props to whoever edited this, it was truely a joy to watch

Imagine if the kilo standard hadn’t been captured by pirates on its way to America in 1793

@Merennulli

3 ай бұрын

We'd have a very old artifact in the national museum while still using US Customary Units?

@zeroxception

3 ай бұрын

@@Merennulli yes its kind of nice that the US continues to use the measures of its former masters.

@TheRavenCoder

3 ай бұрын

We do use metric measurements. We just put them through some funky equations first. For example, a pound is *defined* as 453.59237 grams. Just to be clear, that isn't just a conversion factor, but the actual definition.

@DanielPaast

3 ай бұрын

​@@Merennulli It´s freedom units!! You communist!!

@WulfgarOpenthroat

3 ай бұрын

@@TheRavenCoder Very much so! In fact, every time the definition of metric units were refined to higher precision and finally fixed in terms of universal constants, changing them ever so slightly, it literally changed US Customary Units that were defined in terms of metric units, too. Not the conversion between them, but ie the same ingot of exactly 1 pound of lead as measured before wouldn't weight exact;y 1 pound after(tho ofc you'd need lab equipment to be able to measure that precisely).

I love watching Adam run a lathe! He moves skillfully and it's just a pleasure to see someone with such well placed confidence in their abilities.

@andrewbloom7694

3 ай бұрын

A big improvement from the guy who sliced his finger open trying to use a rag on it lol

@DoRullings

3 ай бұрын

Adam have many skills, but I'm sorry to say that his skills on the lathe is below average.

@realSethMeyers

3 ай бұрын

@@DoRullings I'm not a machine operator by any means, so maybe I'm totally misreading it haha

@DoRullings

3 ай бұрын

@@realSethMeyers I understand. I'm a machinist, which is a three-year education here in Norway, and for an experienced machinist it's very easy to see that Adam is a self-taught. He doesn't do anything crazy or dangerous, at least not in this video, but he does several things in a way a trained machinist wouldn't. However, he got the product he wanted and that's all that matters in this case.

Amazingly, Le Grand K was only dethroned a few years ago. It remained the internationally recognized standard for mass until 2019, as the last standard measure that was still based on a physical prototype.

@aserta

3 ай бұрын

Right. 2019. When all things went wrong.

@MarkEichin

3 ай бұрын

I'll admit I was hoping to see a Watt Balance build but it seemed a bit unusual for this channel (quick, someone get one on-screen in a scifi movie so he has an excuse to build one :-)

That carnival music and transition to the spinning lathe were brilliant. Kudos to the editor.

My fav in this one was when the lathe and camera lined up so it almost looked like stop-motion for a moment.

Nice timelapse on the first lathe job! Loved how you matched the rotation speed.

Awesome and simple project again! Learned alot too

wow i am digging the atmospheric music during lathing

This is awesome! I learned about Le Grand K randomly from Veritasium while I was in high school. While taking the ACT in Junior year, I was running out of time during the reading section, and did not have the time to read the final passage. I skimmed it for two seconds, realized it was about Le Grand K, and just skipped straight to the questions. Finished the section with time to spare!

As a kid in the 60s and early 70s, things like the weight and measurement standards always intrigued me, and I was able to see such things used in real manufacturing, as opposed to some scientific thing locked under glass, and in some strange building. The field of metrology became a thing that I felt was too silly in the way some people seemed to worship the bits and pieces of a set of metal locks and blades of metal used to calibrate tools. My first job was to verify the depth of a cone hole in a magnetic disc hub in order to determine that it would be tight on the post that was made to fit it. I used a small bearing ball of a certain size dropped into the cone hole, then set up a pair of gauge blocks to set a depth micrometer to measure the amount of ball/sphere sticking above the platter hub. Being the smart alec I am, I double checked the gauge blocks and sphere before every use of them, in order to be certain I was doing a good job. And it came to be what saved my neck from being canned, as there was a rash of hubs that came back as defective from a very particular customer. What we found, was their hard drive hub post had worn from slipping on startup many years, and not the cone hole being too big!

17:29 a tappy tappy tap.

Hey, Shop looks very good in that opening shot! All that hard work you guys did is really showing off!

The editing in this episode is top notch!

Whoever added "Au Revoir Adam!" is a genius 😂

Its funny that all these years I've thought the cave was so small and would love to see more of the shop. But now I realize how comforting and familiar that small space was now that the view has expanded into the other side of the shop.

You ever watch one of Adam's builds and realize that he is really just a museum curator that creates his museum pieces by hand? I'd say he's an aspirant museum curator... but he's got a legitimate museum's worth of film history paraphernalia in addition to niche nerd subject replicas and items.

Great job. Thank you 😊

A bizarre replica choice, but an awesome ODB! Love the excitement, and the editing just put it over the top! Hilarious, and informative!

Your fascination with the obscure things in this world is fun to watch !!!

Digging the the new lighting on the hardware store side of the shop!

14:20 the music during the build montage is nice

I heard that a vacuum is actually not ideal because in the absence of pressure there will be a small amount of atoms escaping from the sample into the vacuum.

This channel is significantly better then It was a year ago.

I work with Petroleum Metrology at work, getting our provers calibrated at the government offices using reference standards for both volumetric and mass provers. Very cool stuff.

4:22 - Digging the "French" concertina accordion music to accompany the lathe!! 12:27 - Cleanup on aisle 9!! 🤣🤣

Le Grand K, the ur-kilogram, is an object whose mass defined the SI reference kilogram from 1889 until 2019. The SI kilogram now arises from physical constants. 90 wt-% platinum 10 wt-% iridium in all copies breathed hydrogen, varying in mass by micrograms (parts per trillion relative) over time.

I love the Americaness of this. You're making a display case for an iconic Metric standard, and you're measuring the sizes in Imperial measurements. Brilliant.

As always well done

The "Au Revoir" at 15:01 cracked me the fuck up

Yet another super informative video 👍

It’s so interesting to see your machine work (lovely) measured using the Imperial system, and holding Le Grande K.

@falconwind00

3 ай бұрын

Le grande 2.20462262185 pounds.

Watching the lathe work, I find myself wanting to put my hand over my iced tea to keep chips from flying into it :-).

@travistucker7317

3 ай бұрын

You'd still have one stuck to the side an hour later when you looked to see if you had drank the last sip yet

A great video thanks for sharing

Loved the little French notes. Awesome!

I work at the Technical University of Delft in the Netherlands, and we have a round ball version of the kilo in our collection. Its such a cool thing to see and tell the story about the object.

the way the framerate while tirning at 4:30 ish making it look like its moving slowly but with blur is very pleasing for some reason

Been watching so much Star Trek, thought the title had Klingon in it!! lol. Still love Adam's videos.

It's fascinating to me to see these manual powered woodworking tools, I did some woodworking in the late 90s but even then, it was computer guided (not sure if CNC or something else, wasn't that aware of the terminology at the time), seeing the manual work with these is astounding!

Holy, the sped up part @4:35 was soo satisfying

Simply amazing.

Just learned about Richlite from this. I need to get some to play with.

Your pronounciation of Le Grand K is actually super good! Bravo Adam!

Smarter Every Day & Veritasium both have great videos on metrology as well, absolutely wonderful nerdisms.

The grand kilo is vacuum sealed, I don't know why I was waiting for Adam to rub the glass with alcohol and burn out the oxygen.

You found a rabbit hole and went down it. Thumbs up!

I love the time lapse

Any chance we can get the material list for this? Specifically the glass domes? Love the vid!!!

Check out the kilogram sphere of silicon polished to perfection in Australia.

16:36 he trusted that glue way too much!!

@Warriorbox

3 ай бұрын

I thought it was going to fall out and smash both the domes, and cover Adam in broken glass. I actually said Nooooo! out loud.

One National Lab created a ground and polished model "Standard Kilogram" being a perfect sphere of Silicon crystal accurate within several atoms of diameter tolerance, with the idea that the Kilogram was a specified number of silicon atoms' mass.

Great video sir you are awesome ❤️

This was very therapeutic and stressful at the same time!

that looks great..

Beautiful :)

15:30: Watching you clean the inner bell jar, I imagine myself at this step in the process dropping it and losing the will to continue.

Measuring the kilogramme in inches is a little blasphemous

@ostsan8598

2 ай бұрын

It's ok, he used fractional inches.

That material cuts beautifully. Richlite, you called it? I need to look into getting some for my own projects.

I wrote a (terrible) webcomic about someone doing exactly this in 2002. I am so, so excited to see it done for real!

I once saw a short Doco about Le Grand Kilogram. The fact that the original had gained weight since it was set as a measurement tool. The doco showed the construction of a sphere using a highly stable metal and keeping it sealed in an inert gas. I can recall it being polished in a specialized holder, no fingers allowed. Now Adam tell us they have replaced all this with a cosmological constant!

Need to know more about that yellow and blue ornithopter on the ceiling seen when the camera fell!

A + sir, another Grand Build, Tanks 4 Sharin . . .

9:44 With all the highspeed montages, it actually took me a couple of seconds until i realised that this was real time, hah.

I LOVE the cammera falling XD so funny

Very cool. You should do the metre prototype next

@scottmichaelharris

3 ай бұрын

That one is just defined by the speed of light and a time.

@jacob_90s

3 ай бұрын

@@scottmichaelharris Need to learn your history mate. Metre used to have a physical prototype as well.

@scottmichaelharris

3 ай бұрын

@@jacob_90s sorry I thought you meant nowadays.

I knew measuring a distance perfectly accurately was pretty impossible…but had no idea weighing things was a similar issue.

Le Grand K! I love it!

Feeling faith and safety in each other..............wow!

Perfect! 👌

So until 2019 the official definition of the Kilogram was worded as "The kilogram is the unit of mass; it is equal to the mass of the international prototype of the kilogram". But I can't seem to find any official definition of the IPK. I sort of imagined there might be written a definition to specify e.g. that it was the object made by a certain group of people at a certain time or something, and to distinguish between the IPK and surface contamination, but doesn't seem to be anything like that. Although there was a standard that the mass only counts as official after it's been cleaned in a specified way.

Anyone know the ambient music playing when he is working the richlite on the lathe? Starting at around 9:00 - 12:00 awesome choice while looking at the shape forming.

@jakobvanklinken

3 ай бұрын

All the music is credited to "Jinglepunks" in the description, but I guess you could shazam it if you really wanted to

The Kilogram hasn't yet been replaced with a physical constant but they're working on it.

Very cool, but also a little disappointing you didn't pull a vacuum in there. Maybe a follow-up video?

Would've bet that Adam would've gone next level by adding interior lighting for dramatic effect.

I assume you've seen Vertasium's video on "the worlds roundest object" talking about the new standard for the 1kg measure. It's an old one but a good one.

Editor Josh deserves une baguette for this one 👏

@joshbymyself

3 ай бұрын

🥖😁

Yell More! I love passion about science!!! SCIENCE!!!

I’m a physics teacher and this would be so great to have in my classroom to show students! Love the detail!! Now I just have to get my hubby to make one 😂

Very cool project! But man, I was screaming at the screen when he started to turn it at 16:35 !! And when we bang the heck out of it while seating the outer dome... Did he crack the glass? Sometime does not look correct at 19:31-32. I truly enjoy his videos. A lot of cool stuff.

I glued my fingers together once in the middle of the night and was glad that there was a 24 hr store where I could get fingernail polish remover. I don’t know if 7-11 carries it but I can say that 24 hr stores are more rare now than they were 20 years ago. I try to keep acetone on hand these days.

... Has anyone thought of doing a vast compilation of all Adam's slaps, grunts and stomps? I can't be bothered myself but, I'd love to see that.

15:00 is so classic Adam 😂

adam savage is the freaking best