SEARCH · Engineering Papers
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.
Statistical measurements of deformation structures and refractive indices in experimentally shock loaded quartz specimens with different crystallographic orientations
Atmospheric refractive corrections in high accuracy radio interferometry
Seismic refraction profiles of ash flow in Valley of Ten Thousand Smokes, Alaska, obtaining P wave velocities
Millimeter wave and optical astronomical refraction differential measurements, showing dependence on atmospheric water vapor
Augmentation of human eye focus control by varying index of refraction with nematic liquid crystals
Influence of atmospheric refraction on minitrack interferometer system and correction procedures for computation accuracy
Ray tracing techniques for examination of refractivity profile sensitivity in tropospheric range and Doppler effects on profile shape
Results of world wide surface refractivity test conducted in support of Apollo program
Shallow ocean depth measurements by aerial photographs of wave refraction and wavelength changes and by multispectral scanning of wave reflection
Transparent solids unpolished samples refractive index and dispersion measurement using Abbe refractometer
Australian tektites population polygons of bulk specific gravity and refractive index, indicating variations in chemical composition
Plasma refractive index effects in pulsed HCN lasers, calculating stable cavity mirror curvatures constriction as function of electron density by ray matrix approach
Short N wave refraction and diffraction by gas- filled soap bubble, discussing measurements to explain peaking and rounding in sonic boom pressure signature
Aqueous HCl solutions refractive index calculation from concentration dependence for Venus clouds composition
Venus atmosphere critical refraction model, examining optical effects and ray paths
Refraction correction in photometer with cylindrical light scattering cell and detectors, describing experimental testing by mathematical and geometrical analysis
Ionospheric refraction errors in satellite tracking, computing elevation, range and range rate corrections
Measurement of the refractive indices of 2H SiC over the wavelength range from 435.8 to 650.9 nm by the method of minimum deviation. A curve fit of the experimental data to the Cauchy dispersion equation yielded, for the ordinary index, n sub zero = 2.5513 + 25,850/lambda squared + 8.928 x 10 to the 8th power/lambda to the 4th power and, for the extraordinary index, n sub e = 2.6161 + 28,230/lambda squared + 11.490 x 10 to the 8th power/lambda to the 4th power when lambda is expressed in nm. The estimated error (standard deviation) in these values is plus or minus 0.0006 for n sub zero and plus or minus 0.0009 for n sub e. The birefringence calculated from these expressions is about 20% less than previously published values.