Airborne fluorometer applicable to marine and estuarine studies
Fraunhofer line discriminator /FLD/ used for airborne fluorometer applicable to marine and estuarine studies
Hemphill, W. R.↗
Engineering topics
Markle, D. A.
Publications and source records attributed to Markle, D. A..
Airborne Fraunhofer Line Discriminator
Airborne Fraunhofer Line Discriminator enables prospecting for fluorescent materials, hydrography with fluorescent dyes, and plant studies based on fluorescence of chlorophyll. Optical unit design is the coincidence of Fraunhofer lines in the solar spectrum occurring at the characteristic wavelengths of some fluorescent materials.
Gabriel, F. C.↗
A new method for producing optical mirrors
Pure silicon improves optical mirrors for use in telescopes and high resolution optical systems. Pure silicon is used in both mirror and substrate in environments where large thermal changes occur. It has applicability in astronomical devices.
Markle, D. A.↗
Theoretical efficiency of the Princeton two-element echelle spectrograph
Echelle spectrometer for use with spaceborne stellar telescope in Advanced Princeton Satellite Study
Hemstreet, H. S.↗
Remote sensing of luminescent materials
Explore the source record for details and available documents.
Markle, D. A.↗