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Much to the consternation of scientists, the cylindrical platinum-iridium artifacts that represent the kilogram (see image above) have been gradually packing on extra weight due to surface contamination. Since that unit of measure is the last to be based on an artifact and not a physical constant

1 year ago 0 Comments
May 3, 2013 at 9:01AM
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Physicists are currently hotly debating a topic some of us never think about -- or if we did -- surely we'd think 'there's an answer for that, even if I don't know what it is.' The question? The question at hand is 'how heavy is a kilogram?' The currently accepted answer is the mass of a cylinder o

4 years ago 0 Comments
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Okay, so we could pretty much figure out that JVC's breath sphere speaker wasn't exactly the roundest thing we'd ever seen, but we can't say we've really ever given much thought to how round / not round a round object really is. Thankfully, the scientists involved in the Avogadro Project do give it

6 years ago 0 Comments