Results 211 to 220 of about 308,461 (247)

Physical Optics, Photometry and Spectrophotometry

, 1972
Dennis W. Hill
semanticscholar   +4 more sources

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Optics and photometry

, 1998
W. Makous
semanticscholar   +2 more sources

Saao standards for optical photometry

Astrophysics and Space Science, 1995
A review is given of the development of systems of photometric standard stars at the South African Astronomical Observatory. A brief historical perspective indicates how the Harvard E-regions were chosen as standard sequences and developed into a very precise Southern hemisphere system for UBV(RI) c photometry ...
A. W. J. Cousins, D. Kilkenny
openaire   +2 more sources

Fibre Optic Reflection Photometry on Blood

Cardiovascular Research, 1968
A two photocell assembly has been used to measure the light reflection of blood conducted by fibre optics. Fibre optic reflection spectra of oxygenated and reduced blood samples show an isobestic region around 850 nm. Non-specific variations of the light reflection from a mirror do not affect the ratio of detecting and compensating photocell outputs ...
Gerrit A. Mook, Earl H. Wood, Peter Osypka, Ralph E. Sturm   +3 more
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Statistics of intensity in adaptive-optics images and their usefulness for detection and photometry of exoplanets

Journal of The Optical Society of America A-optics Image Science and Vision, 2010
Szymon Gładysz, Natalia Yaitskova, Julian C. Christou   +2 more
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Light scattering by media composed of semitransparent particles of different shapes in ray optics approximation: consequences for spectroscopy, photometry, and polarimetry of planetary regoliths

, 2004
Yuriy Shkuratov, Yevgen Grynko
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Tapered Optical Fibers for Fluorescence Lifetime Photometry

Conference on Lasers and Electro-Optics, 2021
We describe a system exploiting a multi-anode array placed in the far-field plane of a tapered optical fiber to perform fluorescence lifetime photometry with depth-resolution in brain tissue.
Bianco M., Balena A., Pisanello M., Pisano F., Sileo L., Spagnolo B., Montinaro C., Sabatini B. L., De Vittorio M., Pisanello F.   +9 more
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Deconvolution method for accurate astrometry and photometry on adaptive optics images of stellar fields

Astronomical Telescopes and Instrumentation, 1998
Jean‐Pierre Véran, François Rigaut
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Absorption photometry of patterned deposits on IMPROVE PTFE filters

Journal of the Air and Waste Management Association
The IMPROVE program (Interagency Monitoring of PROtected Visual Environments) tracks long-term trends in the composition and optics of regional haze aerosols in the United States. The absorptance of red (633-nm) light is monitored by filter photometry of
Warren H White, Scott A Copeland, Jason Giacomo, N. Hyslop, Lindsay M Kline, William Malm, S. Raffuse, B. Schichtel, Nicholas J. Spada, Christopher D Wallis, Xiaolu Zhang   +10 more
semanticscholar   +1 more source

Determination of optical constants by photometry

Journal of Physics D: Applied Physics, 1983
A recent study of the accuracies of determining the optical constants of thin films, for film thicknesses up to 0.04 lambda , has been extended to include film thicknesses up to 0.25 lambda , and the results are reported. It is shown that the method may also be applied to bulk materials.
openaire   +2 more sources