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b'The reign of Le Grand K has come to an end. After 130 years, this hunk of metal sitting in a Parisian vault will no longer define the kilogram. The new kilogram mass will be defined by Planck\\u2019s constant, joining three other units for redefinition by fundamental constants.\\xa0But as we measure with increasing precision \\u2013 from cesium atomic clocks to gravitational wave detectors able to measure spacetime distortions to 1/1000th the width of a proton \\u2013 is something fundamental lost along the way?\\xa0Meanwhile, the BiPiSci team accepts the banana-measurement challenge.\\nGuests:\\n\\n\\n Jon Pratt\\xa0\\u2013\\xa0Mechanical engineer and engineer and Chief of the Quantum Measurement Division of the Physical Measurement Laboratory (PML) at the National Institute of Standards and Technology\\n\\n\\n Wolfgang Ketterle\\xa0\\u2013 Physicist at MIT, Nobel Laureate\\n\\n\\nSimon Winchester\\xa0\\u2013 Author of \\u201cThe Perfectionists: How Precision Engineers Created the Modern World\\u201d\\n\\n\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'