reflectance spectra

reflectance spectra

Spectra by means of which remote chemical analyses may be made, based on the reflectance efficiency of a planetary or satellite surface at various wavelengths, particularly near-infrared wavelengths.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
Indeed, iridescent reflectance spectra often exceed 100% reflectance when measured relative to a diffuse white standard.
Diffuse reflectance spectra (VIS-NIR) and absorbance spectra (VISIBLE) were obtained using an Ocean Optics spectrophotometer (USB 2000, Ocean Optics, United State of America), between 400 nm and 900 nm (region of the visible and near-infrared), equipped with a tungsten-halogen lamp and both silicon and germanium detectors.
Reflectance spectra corresponding to each colored glaze was collected in the 300-1000 nm wavelength range; however, the results produced within the visible region, 400-700 nm, are shown.
The FTIR reflectance spectra in dependence on the index x (Ge content) are presented in Figure 6.
The reflectance spectra of the ceramics are shown in Figure 3.
Final output of this work is to provide a comprehensive database of FTIR reflectance spectra to scientists and conservators as a tool for the noninvasive identification of natural organic materials belonging to the classes of proteins, lipids, polysaccharides, and resins.
Diffuse reflectance spectroscopy (DRS) spectra were acquired on a PerkinElmer Lambda 35 spectrophotometer with an integration sphere with a resolution of [+ or -]1nm; from the reflectance spectra, the Kubelka-Munk function was determined and the band gap energy was estimated [12, 13].
Figure 5 reveals the hyperspectral image of PEG-AuNPs (Figure 5(a)) and the mean reflectance spectra of the most commonly observed classes of PEG-AuNPs, in the field of view (Figure 5(b)).
Barringer, "Effects of heavy metals on the absorbance and reflectance spectra of plants," International Journal of Remote Sensing, vol.
The NIR diffuse reflectance spectra of sesame seed samples were measured in the wavelength range of 4000-12,000 [cm.sup.-1] on a Bruker-TENSOR37 FTIR spectrometer (Bruker Optics, Ettlingen, Germany) using OPUS software.