Sign In

Communications of the ACM

ACM News

The Quest to Perfect the ­niversal Language of Science


View as: Print Mobile App Share: Send by email Share on reddit Share on StumbleUpon Share on Hacker News Share on Tweeter Share on Facebook
Kibble balance

This machine, known as the Kibble balance, will help physicists re-define the kilogram to parts per billion.

Credit: J. L. Lee/NIST

For millennia, humans have turned to the sky to tell time.

From Wired
View Full Article


 

No entries found