3 ms·
Interesting video with some historical background about the kilogram and that sphere http://youtu.be/ZMByI4s-D-Y http://youtu.be/ZMByI4s-D-Y
by micampe 12y ago
Interesting video with some historical background about the kilogram and that sphere http://youtu.be/ZMByI4s-D-Y http://youtu.be/ZMByI4s-D-Y