How much does a kilogram weigh?

Nobody knows. The ninety “perfect” platinum/iridium 1kg ingots cast in 1878 all weigh different amounts now, for reasons that may challenge our basic understanding of physics and the natural world.

Published by Waldo Jaquith

Waldo Jaquith (JAKE-with) is an open government technologist who lives near Char­lottes­­ville, VA, USA. more »

2 replies on “How much does a kilogram weigh?”

  1. Fuck it, I’m going back to using cubits — the lengthy of my elbow to my fingertips. If anybody else’s measurements come out differente… well, that’s THEIR problem.

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