SEARCH · Search NASA
Results for “SPECTROPHOTOMETER”
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.
Study and investigation of optical system, phase II Final report
Optical design for infrared spectrophotometer and telescope for Mars flyby spacecraft
Second-order spectra of symmetric cyanine dyes.
Second order absorption spectra of symmetric cyanine dyes in methanol solution using spectrophotometer
The spectral energy distribution of the earth's ultraviolet night airglow.
Measurements from UV objective grating stellar spectrophotometers rocket flown to obtain stellar spectra
Spectrophotometric technique quantitatively determines NaMBT inhibitor in ethylene glycol-water solutions
Spectrophotometric method, using a ratio-recording ultraviolet-absorption spectrophotometer, permits analysis of NaMBT in ethylene glycol-water solutions with high accuracy. It reduces analysis time, requires smaller samples, and is able to detect extremely small concentrations of mercaptobenzothiazole.
Advanced research telescope for lunar surface use.
LEM optical astronomy package /OAP/ containing astronomical telescope, spectrophotometer, data processing subsystem and other devices, for unmanned landing and life support
Stellar photometry from a satellite vehicle.
Far UV radiation flux measurement by satellite- borne telescopic stellar spectrophotometer
The thermal emittance of mica as a function of thickness.
Reflectance, transmittance and absorptance of muscovite type mica as function of thickness measured, using prism and grating spectrophotometers
Design, fabrication and performance of an ellipsoidal spectroreflectometer
Far infrared ellipsoidal spectrophotometer design, fabrication, and performance
Reflectance, transmittance, and thermal emittance of mica as a function of thickness.
Reflectance, transmittance and absorptance of muscovite type mica as function of thickness measured, using prism and grating spectrophotometers
Low temperature far-infrared transmission properties of polycrystalline and single- crystal silicon.
Far Ir transmission properties of polycrystalline and single crystal silicon at low temperatures, using spectrophotometer data recording
Estimating the size and concentration of unicellular microorganisms by light scattering.
Unicellular microorganisms size and concentration estimates based on light scattering measurements of suspensions in spectrophotometer cuvette compartment
Some spectrometric results from the NASA 1968 airborne auroral expedition
Auroral spectrophotometer measurements from 1968 NASA airborne expedition, discussing oxygen and nitrogen spectral lines
The response of phosphor-output image intensifiers to single-photon inputs
Phosphor-output image intensifier response to single photon inputs in multichannel spectrophotometer for faint optical sources
The Nimbus 4 Infrared Spectroscopy Experiment, IRIS-D. Part 1: Calibrated Thermal Emission Spectra
Calibrated infrared emission spectra of earth and atmosphere using high resolution interferometer spectrophotometer on Nimbus 4 satellite
O I and H I emissions from the upper atmosphere of Venus
Venus upper atmospheric UV spectra from rocket- borne telescope spectrophotometer, considering O I and H I emission features
Direct analysis of hydrogen/deuterium mixtures: A concept
Fraction of deuterium/hydrogen mixture is isolated by column chromatography, ionized, and the HD+1-0 band absorption measured with conventional high-resolution infrared spectrophotometer.
Space observations of the variability of solar irradiance in the near and far ultraviolet
Satellite observations of the ultraviolet solar irradiance in selected wavelength bands between 1200 and 3000 a were made continuously by photometers consisting of broad-band sensors operated on Numbus 3 and 4 which were launched in April 1969 and 1970. In addition, spectrophotometer measurements of the solar irradiance were made with a dispersive instrument at 12 selected wavelengths from 2550 to 3400 a with a 10 a bandpass on Nimbus 4. Variations of the solar irradiance associated with the solar rotational period were observed since the launch of Nimbus 3. These variations are apparently associated with two source regions separated by about 180 deg in solar longitude. The change in irradiance with solar rotation was found to increase with decreasing wavelengths. Different types of the observed variations in uv solar irradiance can be classified in accordance with characteristics times, e.g. in the order of increasing periods as follows: (1)flare associated enhancements (2) 27-day variations due to solar rotation; (3) a possible biennial effect; and (4) long term variations associated with the 11-year solar cycle.