EditorialAn undated photo provided by J. Burrus/NIST shows Elizabeth Donley, the chief of the time and frequency division at the National Institute of Standards and Technology, with an atomic gyroscope. (J. Burrus/NIST via The New York Times)
EditorialPlans and views of magnetic compasses, including one nautical compass set on a gyroscope. Copperplate engraving by Wilson Lowry after a drawing by John Farey from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longma...
EditorialPlans and views of magnetic compasses, including one nautical compass set on a gyroscope. Copperplate engraving by Wilson Lowry after a drawing by John Farey from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longma...
EditorialPlans and views of magnetic compasses, including one nautical compass set on a gyroscope. Copperplate engraving by Wilson Lowry after a drawing by John Farey from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longma...