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Fabrication and testing of an airborne ice particle counter

An optical ice particle counter was proposed as a companion instrument to the GSFC laser nephelometer. By counting ice particles and total cloud particles (both ice and liquid water), these two instruments may be used to study the balance between ice and water in clouds

Spectral line discriminator for passive detection of fluorescence

A method and apparatus for detecting fluorescence from sunlit plants is based on spectral line discrimination using the A-band and B-band absorption of atmospheric oxygen. Light from a plant including scattered sunlight and the fluorescence from chlorophyll is passed through a chopper into a cell containing low-pressure, high-purity oxygen. A-band or B-band wavelengths present in the light are absorbed by the oxygen in the cell. When the chopper is closed, the absorbed light is remitted as fluorescence into a detector. The intensity of the fluorescence from the oxygen is proportional to the intensity of fluorescence from the plant

Radio Astronomy

Contains reports on two research projecst.California Institute of Technology Contract 952568Sloan Fund for Basic Research (M.I. T. Grant 241

Radio Astronomy

Contains reports on two research projects.California Institute of Technology (Contract 952568)U. S. Air Force Air Force Systems Command (Contract F33615-72-C-2129

Radio Astronomy

Contains reports on three research projects.National Aeronautics and Space Administration (Grant NGL 22-009-016)National Aeronautics and Space Administration (Grant NGL 22-009-421)National Science Foundation (Grant GP-20769)California Institute of Technology Contract 952568Sloan Fund for Basic Research (M. I. T. Grant 241

Radio Astronomy

Contains research objectives, summary of research and reports on three research projects.National Aeronautics and Space Administration (Grant NGL 22-009-016)National Aeronautics and Space Administration (Grant NGL 22-009-421)National Science Foundation (Grant GP-20769)National Science Foundation (Grant GP-21348)Joint Services Electronics Programs (U. S. Army, U. S. Navy, and U. S. Air Force) under Contract DA 28-043-AMC-02536(E)California Institute of Technology Contract 952568Sloan Fund for Basic Research (M. I. T. Grant 241

Radio Astronomy

Contains reports on six research projects.National Aeronautics and Space Administration (Grant NsG-419)National Aeronautics and Space Administration (Contract NSR-22-009-120

Radio Astronomy

Contains reports on four research projects.National Aeronautics and Space Administration (Grant NGL 22-009-016)National Aeronautics and Space Administration (Grant NGR 22-009-421)National Science Foundation (Grant GP-20769)National Science Foundation (Grant GP-21348)California Institute of Technology Contract 952568Sloan Fund for Basic Research (M. I. T. Grant 241