This paper describes the development of Fiber Optic Gyroscope (FOG) for Space applications at LEOS. The sensor has all solid-state optical devices for the precise measurements of mechanical rotation. The basic phenomenon underlying optical rotation sensing is known as the Sagnac effect. In the Sagnac effect two identical light beams traveling in opposite directions around a closed loop path exp...

Bobbin and M. H. Thompson, Ann. Otol. Rhinol. Laryngol. 87, 185 (1978). 13. Glutamate and aspartate determinations performed by the enzymatic method of L. T. Graham and M. H. Aprison [Anal. Biochem. 15, 487 (1966)] yielded no evidence of an increase in the concentrations of these substances in perilymph collected during acoustic stimulation as compared with perilymph collected in silence. If AN...

The basement lamella under the epidermis of amphibian larvae shows a sub-microscopic architecture of remarkable geometric regularity: It consists of about twenty layers of ground substance in which cylindrical fibers (presumably collagenous) of about 500 Angström diameter are embedded parallel to one another, but with the fiber directions alternating by 90 degrees from layer to layer. The repai...

Modern multifrequency eddy current inspections typically produce more information than is actually processed by the analyst. The traditional “strip chart” and impedance-plane signal analysis presentations contain the data needed to simultaneously extract a number of quantities, including the depth profile and surface extent of flaws, the distance from the probe to the test piece, the character ...

The Time and Frequency Division of the National Institute of Standards and Technology (NIST) is developing a miniature laser-cooled Cs-fountain frequency standard. We anticipate that this device will be useful as a transportable reference for comparison of frequency standards at other laboratories. Additionally, it could be useful for measuring the gravitational clock shift at various locations...