Kilogram weight loss
The world standard kilogram, a cylinder of platinum and iridium alloy cast in 1889, is apparently losing weight. There are reports that its weight has decreased by about 50 micrograms when compared with other copies kept around the world. Scientists can’t tell if others are getting heavier or the master is lighter.
The world standard kilogram, a cylinder of platinum and iridium alloy cast in 1889, is apparently losing weight. There are reports that its weight has decreased by about 50 micrograms when compared with other copies kept around the world. Scientists can’t tell if others are getting heavier or the master is lighter. The kilogram is one of the last to depend on an actual artifact. Georgia Institute of Technology professors are suggesting the gram be redefined as the mass of exactly 18 x 14074481 (cubed) carbon-12 atoms. Start counting.
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