Zobrazeno 1 - 10
of 15
pro vyhledávání: '"M. P. Thekaekara"'
Autor:
M. P. Thekaekara
Publikováno v:
Applied optics. 13(3)
Standard values of the solar constant and extraterrestrial solar spectrum are reviewed. In the visible and near UV, this listing of average irradiance over 100-A bandwidths at 50-A intervals was found to be inadequate for many applications. A more de
Publikováno v:
Applied optics. 8(8)
Measurements of the solar constant and solar spectrum were made from a research aircraft flying at 11.58 km, above almost all of the highly variable and absorbing constituents of the atmosphere. A wide range of solar zenith angles was covered during
Autor:
M. P. Thekaekara
Publikováno v:
Solar Energy. 18:309-325
A general survey is presented of solar radiation measurement, the techniques and instrumentation. The importance of determining the total and spectral irradiance of the Sun is examined in the context of the energy crisis and utilization of solar ener
Autor:
M. P. Thekaekara
Publikováno v:
Solar Energy. 14:109-127
Spectral irradiance measurements at high altitude were made using a variety of monochromators and filter radiometers. The results of all recent high-altitude measurements have been critically examined by an ad hoc committee on 'Solar Electromagnetic
Autor:
A. J. Drummond, M. P. Thekaekara
Publikováno v:
Nature Physical Science. 229:6-9
Recent high-altitude aircraft, balloon and spacecraft measurements of the extraterrestrial solar irradiances indicate that the earlier integral wavelength value was too high and that the spectral data derived from ground-based techniques were uncerta
Publikováno v:
Bulletin of the American Meteorological Society. 53:8-15
The occasion of the 1971 International Solar Energy Society Conference, held at the National Aeronautics and Space Administration (NASA)/Goddard Space Flight Center (GSFC) at Greenbelt, Maryland, U.S.A., was used to organize an international comparis
Autor:
M. P. Thekaekara
Publikováno v:
Solar Energy. 9:7-20
The data currently available on the solar constant and the spectral distribution of the solar radiant flux have been surveyed. The relevant theoretical considerations on radiation, solar physics, and scales of radiometry have been briefly discussed.
Autor:
M. P. Thekaekara
Publikováno v:
Solar Energy. 12:205-215
The data published by F. S. Johnson for the spectral distribution of solar irradiance at the mean Sun-Earth distance and in the absence of the Earth's atmosphere have been compared with similar data published in recent years by six other authors. All
Autor:
M. P. Thekaekara, R. Berendzen
Publikováno v:
The Physics Teacher. 12:54-56
Autor:
M. P. Thekaekara, Donald MacKenzie
Publikováno v:
Applied Spectroscopy. 20:408-410
A filter method of radiometry has been developed which gives a relatively high degree of accuracy and spectral resolution, A set of 34 interference filters covering the range 2800 A-27 000 Å is used. All stages of data reduction are handled automati