The distribution of platinum and palladium metals in iron meteorites and in the metal phase of ordinary chondrites.
Platinum and palladium distribution in iron meteorites and ordinary chondrite metal phase spectrographically determined
CHONDRITE↗
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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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Arc spectrum of silicon.
Arc spectrum of silicon at low pressure measured with plane and concave grating spectrographs and Fabry-Perot interferometers, identifying new solar lines and energy levels
SOLAR SPECTRUM↗
Galactic hydrogen as a hazard in auroral spectroscopy.
Galactic hydrogen emission as interference source for auroral hydrogen emission spectrographs
HYDROGEN↗
Sweep-frequency measurements of solar bursts.
Sweep-frequency measurements of solar nonthermal radio emissions in meter and decimeter wave ranges, discussing low RF spectrograph and interferometer observations
SWEEP FREQUENCY↗
New spectroheliograph at manila observatory.
Rotatable vacuum spectrograph and solar spectroheliograph with plane grating and two mirrors at Manila Observatory
VACUUM SPECTROSCOPY↗
High-resolution emission vegard-kaplan bands of nitrogen.
Laboratory light source emitting forbidden Vegard-Kaplan bands of nitrogen with sufficient intensity for high resolution spectrograph
NITROGEN↗
Thin carbon film serves as UV bandpass filter
Thin carbon film deposited on a 70 percent transparent screen provides a filter for narrow-band detectors in the extreme ultraviolet. The filter also suppresses scattered light and light of unwanted orders in vacuum spectrographs.
Source record↗
Trace levels of metallic corrosion in water determined by emission spectrography
Emission spectrographic method determines trace amounts of inorganic impurities in potable water. The capability of this innovation should arouse considerable interest among plant biologists, chemists working in organic synthesis, and pathologists.
Snell, H. H.↗
Development of chemical analysis techniques for advanced materials research program Fourth quarterly progress report, Sep. 1 - Nov. 30, 1965
Mass and emission spectrographic analyses of magnesium oxide and tantalum carbide to determine impurities
EMISSION SPECTRUM↗
Development of chemical analysis techniques for advanced materials research program Final report, 1 Dec. 1964 - 28 Feb. 1966
Spark source mass spectrographic procedures for bulk impurity determination in refractory oxides
REFRACTORY MATERIAL↗
Development of chemical analysis techniques for Advanced Materials Research Program Third quarterly progress report, Jun. 1 - Aug. 31, 1965
Mass spectrographic impurity analysis of magnesium oxide powders and compacts
MAGNESIUM OXIDE↗
Ultraviolet reflectivity of Venus and Jupiter.
Rocketborne spectrograph measurement of UV REFLECTIVITY of Venus and Jupiter, noting atmospheric Rayleigh scattering effects
ULTRAVIOLET SPECTRUM↗
A vacuum optical bench for testing space experiment packages.
Vacuum optical bench /VOB/ spacecraft testing facility for calibration of telescopes, radiometers, spectrographs and monochromators and measurement of intensity distribution, radiation source and contamination
VACUUM EQUIPMENT↗
Neutron activation analysis traces copper artifacts to geographical point of origin
Impurities remaining in the metallic copper are identified and quantified by spectrographic and neutron activation analysis. Determination of the type of ore used for the copper artifact places the geographic point of origin of the artifact.
Conway, M.↗
Control apparatus for spectral energy source
Automatic light-controlling system for dc arc emission spectrographs controls the vaporization rate of the sample and stabilizes the dc arc. The output energy is regulated such that advantage can be taken of the highly sensitive dc arc source without sacrificing the desired precision.
Gordon, W. A.↗
Development of chemical analysis techniques for advanced materials Quarterly progress report, Apr. 17 - Jul. 16, 1967
Analysis of impurities in magnesium oxide materials by mass spectrographic, chemical, thermogravimetric, vacuum-fusion furnace, quartz tube graphite crucible furnace techniques
VACUUM FURNACE↗
Newly measured and calculated wavelengths in the vacuum ultraviolet spectrum of neutral nitrogen.
Nitrogen wavelengths obtained from precision measurements of various nitrogen lines, using vacuum UV spectrograph
SPECTROGRAPHY↗
Spectroscopic Observations of Nineteen Quasi- Stellar Radio Sources
Red shift determinations for quasi-stellar radio sources using spectrographic techniques
RED SHIFT↗