Manufacturing Bits: Jan. 21


Redefining The Kilogram In 2011, the General Conference on Weights and Measures approved a plan to redefine the kilogram and other measurement units. The new definition for the kilogram will be based on the fixed numerical values of Planck’s constant (h), according to the National Institute of Standards and Technology (NIST), part of the U.S. Department of Commerce. NIST has taken steps t... » read more

Manufacturing Bits: Sept. 10


Rock Around The Clock National Institute of Standards and Technology’s two experimental atomic clocks have set a new record for stability. Resembling a pendulum or metronome, NIST’s atomic clocks can swing back and forth with perfect timing for a period comparable to the age of the universe. The clocks are based on ytterbium atoms. The clock ticks are stable to within less than two part... » read more

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