2,553 views

11:44 L

Watch
- Search Videos
  
  Advanced search »
- Submit a New Video
Discuss
About
- Try clicking on the various channels to see videos posted to that channel - if you're into music you can click the Music channel to get more music sifts - go on and explore! Use the "hotness" when you have opened the channel link to get videos that have gotten a lot of votes, or use "newness" to have a look at the new sifts.
  When browsing sifts you like, have a look at the Related Posts list to see other related videos, click the tags under the video title to see more sifts tagged with the same tags or have a look at other sifts from the same user in the More Posts By list. If the sifted video is in a play list, have a look at the play list to see other interesting videos the Sift users have linked together.
  Enter the Sift Lounge to chat with online sifters about anything and everything, or read interesting posts in the Sift Talk forum.
  The Top New Videos list is always full of interesting, current videos. It is always recommended that you have a look through the Top New Videos, but also have a look at these:
  - Upcoming Unsifted Videos - active video submissions that neither are published to the front page nor archived to the submitter's personal queue
- Have you seen a really funny, surprising, scary, interesting, cute or in any other way extra good quality video?
  Post and share it here - VideoSift is the best video aggregator on the Web, where we share, discuss, promote, and interact with the best videos out there on the web. Post it here, and share it with the large community of video-interested users. And - you are guaranteed to find more very good videos here already!
  Mind you, we only share videos you discover that someone else has made; if you "self link," by posting a video you have made, have posted or have interests in, you risk the ban hammer - read the posting guidelines before posting. The sift is NOT for promoting your own videos - it is for sharing videos others have made.
  Submit a Video Now »
Login

World's Roundest Object! Redefining The Kilogram

submitted by Zifnab

1 decade 1 year 8 months ago

YouTube Description:

The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram.

11 Comments

great presentation!

Fransky says...

Very Cool.

That was amazingly interesting! I had no idea how we define a kilo

That looks amazing! Can I put MY balls on it?

aimpoint says...

Is he moving the sphere or is the sphere moving him?

aimpoint says...

You mean the massaging thing that grinded the ball down to a smaller size...? Sure!

That looks amazing! Can I put MY balls on it?

Sniper007 says...

So are they getting married?

Samaelsmith says...

Interesting. But then how do you accurately measure a litre of water?

(the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second)^3 * 10^-3!

Samaelsmithsaid:

Interesting. But then how do you accurately measure a litre of water?

Quadrophonic says...

No Scientist I know looks that good

Yes! That is exactly what I mean! Meaning of course that my balls are too big and need to be smaller. "Laughs out Loud"

You mean the massaging thing that grinded the ball down to a smaller size...? Sure!

Discuss...

🗨️ Emojis & HTML

Enable JavaScript to submit a comment.

This website uses cookies.

This website uses cookies to improve user experience. By using this website you consent to all cookies in accordance with our Privacy Policy.