Dispersion of amorphous boron films in the near infrared.
Refractive index of amorphous boron films determined from interference of transmission curves
REFRACTIVE INDEX↗
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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.
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Analysis of absorption profiles of autoionizing lines.
Scattering theory for parameterization of absorption cross sections and refractivity for autoionizing spectral lines
SPECTRAL LINE↗
Theory of radio pulses from cosmic ray air showers.
Refractive index variations, Coulomb scattering and time variation of shower front effects on coherent emission of polarized radio pulses from cosmic ray showers
POLARIZED RADIATION↗
Cross section for light scattering and the Lorentz-Lorenz formula.
Fluctuating light scattering cross section and Lorentz-Lorenz refractive index formula derived from microscopic equations
SCATTERING CROSS SECTION↗
Resonance scattering from absorbing spheres.
Electromagnetic scattering from adsorbing spheres near resonances calculated from extinction efficiency factor and angular scattering function dependence on refractive index
RESONANCE SCATTERING↗
A radio occultation experiment to probe the atmosphere of Venus.
Mariner Venus 1967 space probe, obtaining atmospheric pressure density and refractive index from radio signal frequency, intensity and phase changes
REFRACTIVE INDEX↗
Dipole properties of molecular nitrogen.
Optical absorption, refractivity and electron scattering used to construct model dipole spectrum of molecular nitrogen and calculate dipole properties
MOLECULAR GAS↗
Low Frequency Radio Astronomy from the Moon
The radio sky at frequencies of several MHz and below is essentially unexpected with high angular resolution due to refraction and opacity in the Earth's ionosphere.
Radio astronomy Moon Refraction Opacity ionized hy↗
Identify the Limits of Geometric Optics Ray Tracing by Numerically Solving the Vector Kirchhoff Integral
The properties of a pencil of light as defined approximately in the geometric optics ray tracing method are investigated. The vector Kirchhoff integral is utilized to accurately compute the electromagnetic near field in and around the pencil of light with various beam base sizes, shapes, propagation directions and medium refractive indices. If a pencil of light has geometric mean cross section size of the order p times the wavelength, it can propagate independently to a distance p2 times the wavelength, where most of the beam energy diffuses out of the beam region. This is consistent with a statement that van de Hulst made in a classical text on light scattering. The electromagnetic near fields in the pencil of light are not uniform, have complicated patterns within short distances from the beam base, and the fields tend to converge to Fraunhofer diffraction fields far away from the base.
Far field diffraction↗
Cosmic Radiation Effect on Silicon Photonic Mach-Zehnder Modulator
We evaluated the radiation effects of cosmic rays on silicon Mach-Zehnder Modulator loaded on International Space Station. Permanent changes of refractive index (10 -3 ) and carrier lifetime reduction have been observed after 6 months’ radiation.
Mach-Zehnder interferometers↗
A note on the testing of homogeneity of large- aperture parallel plates of glass.
Testing of optical homogeneity of large-aperture parallel plates of glass, and discussion of spherical aberration, refractive index and optical thickness
GLASS↗
The twilight zone of venus.
Twilight zone of venus, examining cusps, brightness, refraction at solar transit, atmospheric circulation, uv clouds and dichotomy
TWILIGHT↗
High-frequency scattering from a coated cylinder.
HF backscattering from coated cylinder having complex refractive index
BACKSCATTER↗
Radiation from electrons in magnetoplasma.
Magnetoplasma electron emission in whistler mode frequency band and extraordinary mode frequency band around plasma frequency where refractive indices are greater than one
MAGNETOPLASMA↗
A satellite method for pressure and temperature below 24 km.
Atmospheric pressure and temperature below 24 km using satellite measurements of atmospheric light refraction from given stars
ATMOSPHERIC PRESSURE↗
Occurrence patterns of topside spread F on Alouette ionograms.
Occurrence frequency patterns of topside spread-F on Alouette satellite ionograms, discussing radio propagation, magnetic irregularities, electron density-induced refraction, etc
SPREAD-F↗
Star/horizon simulator used to test space guidance system
Star/horizon simulator is used for alignment and optical plus photoelectric tests of the sextant for the Apollo guidance and navigation system optical unit assembly. The unit is basically a refractive collimator with a two inch objective lens system and a twenty-four inch focal length.
Schmidt, W. C.↗
Seismic studies of the earth's crust in continents. II - Analysis of wave propagation in continents and adjacent shelf areas.
Wave propagation in continents and adjacent shelf areas used for study of seismic crustal refraction and reflection measurements
EARTH CRUST↗