A seismic refraction system for lunar use.
Miniaturized seismic refraction system for manned lunar landings consisting of geophones, three channel amplifier, calibrator and logarithmic compressor
Kerr, J.↗
SEARCH · Engineering Papers
Results for “Refraction”
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.
General technique for measurement of refractive index variations
Time variation of amplitude and phase fluctuations, impressed on waves propagating through a medium which has a randomly varying refractive index, is used to examine isolated regions along the line of propagation. Technique employs only one antenna at each end of the line.
Source record↗
A theoretical and experimental investigation of acoustic point source radiation in the presence of a reflecting and refracting plane Final technical report, Aug. 1968 - Jul. 1969
Acoustic point source radiation in reflecting and refracting half space environment applied to Saturn 5 launch vehicle dynamics
Corbin, J. C.↗
GEOS satellite tracking corrections for refraction in the troposphere
Comparison of magnitude at different elevation angles of tropospheric refraction formulations
Berbert, J. H.↗
Effects of temperature-profile variation on refraction of sound by jet flow
Refraction of sound by temperature and velocity profiles in jet flow
Hardin, J. C.↗
Refractivity of carbon dioxide under simulated Martian conditions.
Carbon dioxide refractivity measured under simulated Martian conditions and standard temperature and pressure, comparing results with radio occulation methods
Howard, H. T.↗
Statistical measurements of deformation structures and refractive indices in experimentally shock loaded quartz
Statistical measurements of deformation structures and refractive indices in experimentally shock loaded quartz specimens with different crystallographic orientations
Hoerz, F.↗
Refractive corrections in high-accuracy radio interferometry
Atmospheric refractive corrections in high accuracy radio interferometry
Dickinson, D. F.↗
Seismic refraction profiles of the ash flow in the Valley of Ten Thousand Smokes, Katmai National Monument, Alaska
Seismic refraction profiles of ash flow in Valley of Ten Thousand Smokes, Alaska, obtaining P wave velocities
Forbes, R. B.↗
Astronomical refraction at millimeter wavelengths
Millimeter wave and optical astronomical refraction differential measurements, showing dependence on atmospheric water vapor
Cogdell, J. R.↗
Biosystems engineering research. Volume 4 - Augmentation of the focus control system of the human eye through index of refraction variation of liquid crystals materials Final report, 15 Mar. 1969 - 31 Jun. 1970
Augmentation of human eye focus control by varying index of refraction with nematic liquid crystals
Edgerton, R. H.↗
NASA minitrack interferometer refraction corrections
Influence of atmospheric refraction on minitrack interferometer system and correction procedures for computation accuracy
Schmid, P. E., Jr.↗
A cursory examination of the sensitivity of the tropospheric range and Doppler effects to the shape of the refractivity profile
Ray tracing techniques for examination of refractivity profile sensitivity in tropospheric range and Doppler effects on profile shape
Chao, C. C.↗
Surface refractivity measurements at NASA spacecraft tracking sites
Results of world wide surface refractivity test conducted in support of Apollo program
Schmid, P. E.↗
Water-depth measurement by wave refraction and multispectral techniques
Shallow ocean depth measurements by aerial photographs of wave refraction and wavelength changes and by multispectral scanning of wave reflection
Brown, W. L.↗
Measurement of the refractive index and dispersion of an unpolished sample on an Abbe refractometer
Transparent solids unpolished samples refractive index and dispersion measurement using Abbe refractometer
Heinemann, H. M.↗
Comparison of tektite population polygons of bulk specific gravity, true material specific gravity, and refractive index
Australian tektites population polygons of bulk specific gravity and refractive index, indicating variations in chemical composition
Scheiber, L. C.↗
Plasma refractive effects in HCN lasers
Plasma refractive index effects in pulsed HCN lasers, calculating stable cavity mirror curvatures constriction as function of electron density by ray matrix approach
Mccaul, B. W.↗