SEARCH · Search NASA
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.
An automatic system measures the true average shear viscosity of liquids and viscoelastic materials, using the parallel plate method and automatically displays the results on a graphic record. This eliminates apparatus setup and extensive calculations.
Device for calibrating high intensity, high frequency transducer
Extra atmospheric values of brightness and illumination of continuous solar spectrum in 2.7-5.0 micron range - table
Frequency measurement of gas laser transitions in heavy water and acetylene discharges
Transit drift-scan observations of radio sources using cornucopia horn reflector antenna
Spin-spin coupling constants from perturbation- variation and first order perturbed trial function assumptions
Frequency stabilization of laser oscillator against reference laser amplifier, noting residual AM effects
Reaction rates and yield for multichannel molecular collisions, introducing observable yield operator in theory, using motion equations
Differential equation describing nonlinear control systems, and literature survey on using Liapunov functions for problem solutions
Error analysis of orientation methods for extraterrestrial stereophotogrammetric mapping
Organic phosphors detection efficiency for neutrons compared with Monte Carlo theretical calculations
Radiative lifetimes, transition moments, oscillator strengths and excitation probabilities for H molecule, 13, 14, 15 and 22 electron diatmoic molecules and carbon dioxide ion
Graphic method determining sounding rocket vehicle attitude
Design, calibration, and use of radiometers to measure spectral emission in ballistic range and shock tube experiments
Electron flux intensities and energy spectra in inner radiation zone, noting decay constants
Error analysis of orientation methods for extraterrestrial stereophotogrammetric mapping
Stimuli human subjects can identify on unidimensional visual stimulus continuum, discussing apparatus and line length influence
Intensities of translational lattice mode absorptions of alpha phase solid molecular nitrogen in far IR, noting temperature dependence