YouTube Description: The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram.
posted by Zifnab 1 decade 1 year 2 months ago • 2,553 views • 11:44Videos (21) | Sift Talk (0) | Blogs (0) | Comments (1000) |
YouTube Description: The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram.
posted by Zifnab 1 decade 1 year 2 months ago • 2,553 views • 11:44Not yet a member? No problem!
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