SEARCH · Search NASA
Results for “clock”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Clock Technology Development for the Laser Cooling and Atomic Physics (LCAP) Program
The Time and Frequency Sciences and Technology Group at Jet Propulsion Laboratory (JPL) has developed a laser cooling capability for flight and has been selected by NASA to support the Laser-Cooling and Atomic Physics (LCAP) program.
Higher Pole Linear Traps for Atomic Clock Applications
We investigate experimentally and theoretically higher pole linear ion traps for frequency standard use.
Ion-Atom Cold Collisions and Atomic Clocks
This paper is an investigation of ion-atom interactions in the cold and ultra-cold temperature regime. Some of the collisional ion-atom interactions present at room temperature are very much reduced in the low temperature regime.
The constancy of ζ in single-clock Inflation at all loops
We show that the density fluctuations produced by inflation do not evolve in time as long as they are longer than the Hubble scale, including all quantum corrections. This result is important to understand the predictions and the self-consistency of inflation, an epoch that is believed to have happened at the beginning of the universe.
Coordinate velocity and desynchronization of clocks
In this letter, starting from recent experiments about the circular motion of a rotor with an absorber of photons emitted by a Mössbauer source, we want to underline some mathematical aspects in General Relativity framework. We do not want to discuss in detail the different physical interpretations of the experimental results proposed during the recent years and we do not want to propose a new one. Indeed, starting from a paper awarded to Gravity Research Competition 2018, the aim of our work is to analyze three different types of time involved in this experiment linking a term introduced in the above mentioned paper, to the difference between coordinate and physical velocity of light.
Long baseline navigation with clock offset estimation and discrete-time measurements
Not Available
Cardiovascular diseases: a therapeutic perspective around the clock
Not Available
Altered circadian clock as a novel therapeutic target for constant darkness-induced insulin resistance and hyperandrogenism of polycystic ovary syndrome
Not Available