Ashley Totin at America Makes
Ashley Totin, project engineer at America Makes, teaches children about 3D modeling and printing.
Credit: D. Stewart/NIST
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Napkin with Planck’s Constant Guesses
In December 2013, before NIST began its experiments on its newest Kibble balance, group members wrote their predictions on the value of Planck’s constant they would measure. Shisong Li, a guest researcher from Tsinghua University in China, came closest. His prediction differed by only about 5 parts per billion from the measured result.
Credit: NIST
