Zobrazeno 1 - 10
of 287
pro vyhledávání: '"John L. Hall"'
Autor:
Thomas Broyles, John L. Hall
Publikováno v:
Journal of Leadership Education. 15:187-200
Autor:
Thomas Legero, John L. Hall, Wei Zhang, Eric Oelker, Fritz Riehle, Lindsay Sonderhouse, John Robinson, Jun Ye, William R. Milner, Uwe Sterr, D. G. Matei, Christian Sanner
Publikováno v:
2018 IEEE International Frequency Control Symposium (IFCS).
We present the thermal noise limited performance of a cryogenic ultrastable silicon optical cavity operated at 4 K. A three-cornered comparison with two other ultrastable resonantors shows that the 4 K system is largely limited by a flicker frequency
Autor:
Pierre Jacquinot, Ali Javan, Charles H. Townes, John L. Hall, Boris P. Stoicheff, Nicolaas Bloembergen, Arthur L. Schawlow, Raymond E. Kidder, Sergio P. Porto, Alexandr M. Prokhorov
Publikováno v:
Physics Today. 68:44-48
A panel discussion: Nine specialists foresee an expanded frequency range, new kinds of lasers, and many novel applications.
Autor:
Jun Ye, Thomas Legero, Uwe Sterr, D. G. Matei, John Robinson, John L. Hall, Eric Oelker, Craig Benko, Wei Zhang, Fritz Riehle, Lindsay Sonderhouse
We report on a laser locked to a silicon cavity operating continuously at 4 K with $1 \times 10^{-16}$ instability and a median linewidth of 17 mHz at 1542 nm. This is a ten-fold improvement in short-term instability, and a $10^4$ improvement in line
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::325698b15198eb7e1d70a25341ecd324
http://arxiv.org/abs/1708.05161
http://arxiv.org/abs/1708.05161
Autor:
Harvey Pynn, Thomas Harcourt Williams, Sundeep Dhillon, Pete Davis, Raj Joshi, Joe Rowles, Nigel Hinson, Eva Howard, David Hillebrandt, Matt Wilkes, David Lee, Burjor Langdana, Sarah Hollis, Adrian Mellor, John L. Hall, Naomi Dodds
Publikováno v:
Extreme Physiology & Medicine
To support leaders and those involved in providing medical care on expeditions in wilderness environments, the Faculty of Pre-Hospital Care (FPHC) of The Royal College of Surgeons of Edinburgh convened an expert panel of leading healthcare profession
Autor:
John L. Hall
Publikováno v:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 369:4090-4108
After discussing several issues in a future redefinition of the kilogram, this paper considers the lessons that one might have learned from the analogous redefinitions of the metre and the second. The progress of length metrology was slow and steady,
Autor:
Steven R. Jefferts, Scott A. Diddams, Nathan R. Newbury, Peter L. Bender, Christopher W. Oates, John L. Hall, Stefano Vitale, Neil Ashby, Jun Ye, Rita Dolesi, W. J. Weber
Publikováno v:
Proceedings of the International Astronomical Union. 5:414-419
Improved accuracy in measurement of the gravitational time delay of electromagnetic waves passing by the sun may be achieved with two drag-free spacecraft, one with a stable clock and laser transmitter and one with a high-stability transponder. We co
Autor:
John L. Hall
Publikováno v:
Journal of Leadership Education. 7:47-68
Leadership and music are two topics that are rarely mentioned together. However, their universal, intriguing, and complex nature allows a unique framework for helping individuals learn leadership concepts. In this paper several songs have been select
Publikováno v:
Scientific American. 298:74-81
The article reports on the optical frequency comb, a new type of laser light. The comb is composed of very short laser pulses that are evenly spaced. This comb is a more precise and easier measure of time intervals and light frequencies than previous
Autor:
Anthony L. Lau, Gulliver Timoteo, David Peretz, Alice Yam, Xuemei Wang, David Y. Chien, Angelica Medina-Selby, Doris Coit, Colin S. McCoin, Ping Wu, Robert J. Goodson, Melissa D. Michelitsch, Celine Hu, Bruce Phelps, Robert M. Shimizu, John L. Hall, Carol Man Gao
Publikováno v:
Proceedings of the National Academy of Sciences. 104:11551-11556
On our initial discovery that prion protein (PrP)-derived peptides were capable of capturing the pathogenic prion protein (PrP Sc ), we have been interested in how these peptides interact with PrP Sc . After screening peptides from the entire human P