The World's Roundest Object (and Why it Exists)
38,160,062 Views
4,457 Questions Answered
Best of Web
Let’s Begin…
The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram. A kilogram isn't what it used to be. Literally. The name, weight, and definition of a kilogram has been changing constantly since its invention, and the Avogadro Project looks to change that.
About TED-Ed Best of Web
TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.
Meet The Creators
- Video created by Veritasium
- Lesson Plan created by Alexandra Panzer
