The NIST ytterbium clock is based on about 30,000 heavy metal atoms that are ... pancake-shaped wells - an 'optical lattice' - made of laser light. A laser that 'ticks' 518 trillion times per ...

To detect and monitor the climate pollutants in the atmosphere precisely, scientists at the Max Planck Institute for the Science of Light (MPL), Erlangen, Germany, have developed a new type of ...