Proceedings of the National Academy of Sciences of the United States of America, Vol. 6, No. 8 (Aug. 15, 1920), pp. 495-498 (4 pages) ...
According to Theodor Hänsch, director at the Max Planck Institute for Quantum Optics (MPQ) in Germany and one of the winners of the 2005 Nobel Prize in Physics, a laser frequency comb can now be used ...
Helmholtz Zentrum Dresden-Rossendorf (HZDR), which conducts long-term research in the fields of energy, health and matter, has announced the development of a new diagnostic tool specified for a ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 2, No. 7 (Jul. 15, 1916), pp. 399-407 (9 pages) ...
Despite a century of measurements, astronomers can’t agree on the rate at which the universe is expanding. A technique that relies on measuring distances to a specific type of aging star in other ...
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