hyperfine structure.    From Wordnet, Princeton University. 

The magnetic field separates these levels into two "hyperfine" states.    From Wordnik.com.  [New Scientist - Online News] Reference

The hydrogen maser was first used to study the hyperfine structure of hydrogen with extreme precision.    From Wordnik.com.  [Press Release: The 1989 Nobel Prize in Physics] Reference

Transitions between two very closely spaced levels (hyperfine levels) in the cesium atom are here observed.    From Wordnik.com.  [Press Release: The 1989 Nobel Prize in Physics] Reference

For my doctor thesis I had chosen the determination of the nuclear moments of Beryllium from the hyperfine spectrum.    From Wordnik.com.  [Wolfgang Paul - Autobiography] Reference

The hyperfine structure is another kind of small subdivisions, associated with the magnetic and electric moments of magnetic nuclei.    From Wordnik.com.  [Nobel Prize in Physics 1966 - Presentation Speech] Reference

Other investigations were those into the influence of the magnetic moment of the nucleus on the hyperfine structure of spectral lines.    From Wordnik.com.  [Pieter Zeeman - Biography] Reference

During my first year as a graduate student, we worked on a measurement of the isotope shift and hyperfine structure of mercury isotopes.    From Wordnik.com.  [Burton Richter - Autobiography] Reference

ClO2 and the treatment of fine and hyperfine structure set me up for a productive period of studying the spectra of stable free radicals.    From Wordnik.com.  [Robert F. Curl Jr. - Autobiography] Reference

They feature a picture of the solar system, a picture of the probes and a pictorial representation of the hyperfine transition of neutral hydrogen.    From Wordnik.com.  [Earth to Aliens: We're a Bunch of Dorks] Reference

University and through discussions with professor I.I. Rabi, I became interested in a newly discovered effect in the hyperfine structure in deuterium.    From Wordnik.com.  [Aage N. Bohr - Autobiography] Reference

The second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.    From Wordnik.com.  [Second] Reference

He, a former Ph.D. student of James Franck, had just returned from a three years stay at the Niels Bohr Institute in Copenhagen, working in the field of hyperfine spectroscopy and nuclear moments.    From Wordnik.com.  [Wolfgang Paul - Autobiography] Reference

That hyperfine distinction worried Justice Sandra Day O'Connor, but she suggested few lawmakers "would be so naive as to enact a law directly prohibiting or burdening a religious practice as such.".    From Wordnik.com.  [A Chicken on Every Altar?] Reference

Unit of time second The second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.    From Wordnik.com.  [International System of Units (SI)] Reference

The second is now defined as “the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.”.    From Wordnik.com.  [Eureka: The Ultimate Clock] Reference

At the beginning of 1947 Rabi together with several collaborators found that a property of the lowest hydrogen level (namely its so-called hyperfine structure) does not entirely conform with theory.    From Wordnik.com.  [Nobel Prize in Physics 1955 - Presentation Speech] Reference

He did his thesis work with Professor Robert T. Schumacher using a self-made electron microwave spin resonance spectrometer to study the hyperfine spectrum of interstitial hydrogen atoms in CaF2 crystals.    From Wordnik.com.  [John L. Hall - Biography] Reference

Have you a device by which I might measure the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom?.    From Wordnik.com.  [Measurement] Reference

In 1948, in Kopfermann's Institute, which was heavily oriented towards hyperfine structure studies, I completed an experimental Diplom-Arbeit (master's thesis) on a Thomson mass spectrograph under Peter Brix.    From Wordnik.com.  [Hans G. Dehmelt - Autobiography] Reference

The second was redefined in 1967 to be the time it takes for 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.    From Wordnik.com.  [A Great Leap…Forward?] Reference

The first, an “atomic” second, is defined as the duration of exactly 9. 19263177×109 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.    From Wordnik.com.  [Please Tell Me What “God” Means] Reference

We then used it for accurate measurements of the hyperfine separations of atomic hydrogen, deuterium and tritium and for determining the extent to which the hyperfine structure was modified by the application of external electric and magnetic fields.    From Wordnik.com.  [Norman F. Ramsey - Autobiography] Reference

William Nierenberg, and I measured a number of nuclear magnetic dipole and electric quadrupole moments and Rabi and I started two other students, Nafe and Nelson, on a fundamental experiment to measure accurately the atomic hydrogen hyperfine separation.    From Wordnik.com.  [Norman F. Ramsey - Autobiography] Reference

His early career, beginning with his Ph.D. work at Case Western Reserve University, was devoted to a variety of experimental nuclear physics topics, including nuclear structure, hyperfine interactions and reaction dynamics with a focus on the use of heavy-ions.    From Wordnik.com.  [Peter Bond.] Reference

I think of work on hyperfine structure of spectral lines directed by Ebbe Rasmussen; on interactions of a - particles with matter, led by Jacob Jacobsen; of discoveries of new isotopes led by Otto Frisch, using at first old radon tubes from Copenhagen's Radium Institute and the Finsen.    From Wordnik.com.  [Physics in Denmark: The First Four Hundered Years] Reference

(no subject) - slayground, 2006-10-08 11: 07 pm UTC hyperfine.    From Wordnik.com.  [slayground: The Baby-Sitters Club: Reader Survey] Reference

They then emit light as they drop to the lower hyperfine state.    From Wordnik.com.  [New Scientist - Online News] Reference

The hertz is now specified as 1/9,192,631,770 the frequency of the hyperfine splitting in the ground state of the cesium 133 atom.    From Wordnik.com.  [Wired Top Stories] Reference

EPR at X-band under both of these conditions, a narrow doublet radical signal with an 11 G principal hyperfine splitting was detected within the first milliseconds of turnover.    From Wordnik.com.  [Journal of Biological Chemistry current issue] Reference

There's generally a small "isotope shift" in all of the energy levels, and the hyperfine structure may be more complicated, but those are technical problems that are overcome with a bit of lab work.    From Wordnik.com.  [ScienceBlogs Channel : Life Science] Reference

Two other isotopes, barium-135 and -137, have a nuclear spin of 3/2, which creates a hyperfine splitting of the electron energy levels and enables still very weak, but detectable, two-photon absorption.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

Here we produce an ultracold and dense sample of molecules in a single hyperfine level of the rovibronic ground state with each molecule individually trapped in the motional ground state of an optical lattice well.    From Wordnik.com.  [Naturejobs - All Jobs] Reference

Although both electrons will be subjected to the same ambient field of the Earth, the electron tied to the ion in the protein will also be affected by the ion's nuclear magnetic field, which produces hyperfine splitting.    From Wordnik.com.  [physicsworld.com: all content] Reference

Density functional theory calculations based on a model of an MYW adduct radical built from x-ray coordinates predict experimentally observed hyperfine interactions and a shift in g values away from the native tyrosyl radical.    From Wordnik.com.  [Journal of Biological Chemistry current issue] Reference

Derevianko's team overcome this problem by finding a laser frequency that alters both hyperfine states by exactly the same amount - a trick that works in aluminium and gallium but not as well in caesium (www. arxiv.org / abs / 0808.2821).    From Wordnik.com.  [New Scientist - Online News] Reference

So the counter of hyperfine cesium transitions (or the corresponding phenomenon in the case of rubidium atomic clocks) is reset on the ground before launch so that, once in orbit, the clocks will tick off whole seconds at the same average rate as ground clocks.    From Wordnik.com.  [Conservapedia - Recent changes [en]] Reference

1930, is a quantitative theory of the hyperfine structures of spectrum lines.    From Wordnik.com.  [Enrico Fermi - Biography] Reference

(Scientifically, the second is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the ideal cesium-133 atom at 0 K.    From Wordnik.com.  [Fedora People] Reference

Reply to this) (Parent) hyperfine.    From Wordnik.com.  [slayground: The Baby-Sitters Club: Survey Says] Reference