NIST's Ultra-Stable Ytterbium Lattice Atomic Clock (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption In NIST's ultra-stable ytterbium lattice atomic clock, ytterbium atoms are generated in an oven (large metal cylinder on the left) and sent to a vacuum chamber in the center of the photo to be manipulated and probed by lasers. Laser light is transported to the clock by five fibers (such as the yellow fiber in the lower center of the photo). Credit Burrus/NIST Usage Restrictions Please use propert credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.