Results 141 to 150 of about 1,091,681 (196)

Reflections on Solar Variability

Solar Physics, 1981
The Sun is a variable star in many respects: there are secular varitions related to the general solar evolution, and — as discovered in recent years — there are many short period variations of which the 5 min and 160 min pulsations are the most important ones.
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Solar reflectance integrating sphere

Solar Energy, 1960
Abstract An inexpensive integrating sphere for the direct determination of the reflectance of materials irradiated by solar energy transmitted through the atmosphere of the earth is described. Reflectance and transmittance measurements of various metals, cloths, and filters are reported and are compared to spectral and total measurements made with ...
R.V. Dunkle, D.K. Edwards, J.T. Gier, J.T. Bevans   +3 more
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Reference Solar Cell Reflections in Solar Simulators

2011
26th European Photovoltaic Solar Energy Conference and Exhibition; 2613 ...
Romang, D., Meier, J., Adelhelm, R., Kroll, U.   +3 more
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Wave reflections in the solar atmosphere

Solar Physics, 1979
The small phase-lag between velocities observed at different chromospheric levels is interpreted as being due to acoustic waves reflected by the very hot atmospheric layers of the chromosphere-corona transition zone. We consider first an isothermal slab, then a realistic solar atmospheric model and calculate weighting functions for velocities in Ca ii ...
Janine Provost, Nicole Mein
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UV solar reflecting coronagraph

AIP Conference Proceedings, 1990
A dual‐channel reflecting coronagraph is proposed that would provide observations of Lα corona and chromosphere, upper transition‐region phenomena in CIV, and also helioseismology observations in the continuum around 166 nm. Each channel would use a 104×104‐UV‐sensitive CCD array.
R. N. Smartt, S. Koutchmy, J. C. Vial
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Reflecting bottom solar pond

Energy Conversion and Management, 1984
Abstract This communication presents an investigation of a three zone solar pond with a diffusely reflecting bottom. The dynamic performance and its optimization as a large scale solar energy collection and long term storage system have been discussed. Numerical computations, corresponding to the data of solar radiation and ambient air temperature of
Y. Katti, P.K. Bansal
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Solar Reflectance of Glazed Tiles

Advances in Science and Technology, 2014
Exterior wall tiles with high solar reflectance are effective in mitigating heat-island phenomenon. Such walls have also the potential to decrease the warming up of building interiors in mid-summer. For the purpose of increasing the solar reflectance of wall tiles, several kinds of glazes were prepared to measure their visible and infra-red spectral ...
Toyohiko Sugiyama, Hiroshi Kakiuchida, Keiji Kusumoto, Masayoshi Ohashi   +3 more
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Viirs reflective solar bands calibration reprocessing

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
Radiometric calibration coefficients for the VIIRS reflective solar bands have been reprocessed from the beginning of the Suomi NPP mission until present. An automated calibration procedure, implemented in the JPSS operational data production system, was applied to reprocess onboard solar calibration data and solar diffuser degradation measurements ...
Slawomir Blonski, Changyong Cao
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Challenges and Approaches for Sensor Reflective Solar Calibration

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Significant advances have been made in recent years by many countries and agencies in Earth observations via remote sensing instruments operated onboard LEO and GEO satellites. For passive optical sensors, reflective solar (RS) calibration remains extremely challenging in terms of calibration traceability, accuracy, stability, and consistency.
Xiaoxiong Xiong, Jim Butler 0001
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Solar concentrators using total internal reflection

Applied Optics, 1983
A study is presented of solar concentrators based on total internal reflections. The concentrators are placed over photovoltaic cells. Experimental data obtained with different encapsulating materials and dependence on geometrical and physical variables are given.
G, Lifante, F, Cusso, F, Meseguer, F, Jaque   +3 more
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