Filter Photometry Using Cadmium Sulfide Detectors

1961 ◽  
Vol 33 (6) ◽  
pp. 736-738 ◽  
Author(s):  
W. L. Karpen
Keyword(s):  
Cadmium Sulfide ◽  
Filter Photometry

Photo-electric Hβ and uvby photometry

1966 ◽  
Vol 24 ◽  
pp. 170-180
Author(s):  
D. L. Crawford
Keyword(s):  
Narrow Band ◽  
Line Strength ◽  
Interference Filter ◽  
B Stars ◽  
Relative Line ◽  
The Mean ◽  
F Stars ◽  
Two Parameters ◽  
Filter Photometry ◽  
The Continuum

Early in the 1950's Strömgren (1, 2, 3, 4, 5) introduced medium to narrow-band interference filter photometry at the McDonald Observatory. He used six interference filters to obtain two parameters of astrophysical interest. These parameters he calledlandc, for line and continuum hydrogen absorption. The first measured empirically the absorption line strength of Hβby means of a filter of half width 35Å centered on Hβand compared to the mean of two filters situated in the continuum near Hβ. The second index measured empirically the Balmer discontinuity by means of a filter situated below the Balmer discontinuity and two above it. He showed that these two indices could accurately predict the spectral type and luminosity of both B stars and A and F stars. He later derived (6) an indexmfrom the same filters. This index was a measure of the relative line blanketing near 4100Å compared to two filters above 4500Å. These three indices confirmed earlier work by many people, including Lindblad and Becker. References to this earlier work and to the systems discussed today can be found in Strömgren's article inBasic Astronomical Data(7).

Cadmium sulfide / selenide pigments

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Gerhard Pfaff
Keyword(s):  
Cadmium Sulfide ◽  
Bismuth Vanadate ◽  
Red Pigments ◽  
Wurtzite Lattice ◽  
Yellow Orange ◽  
Application Characteristics ◽  
Substitute Products

Abstract Cadmium sulfide and selenide pigments (cadmium pigments) belong to the inorganic yellow, orange and red pigments. Cadmium sulfide pigments are based on the wurtzite lattice, where cadmium can be partially substituted by zinc or mercury and sulfide by selenide. Cadmium pigments are characterized by excellent optical and application characteristics in particular regarding brightness of shade, hiding power, tinting strength, and weather fastness. The declining use of cadmium-containing materials in the last decades is a result of the environmental discussion and the development of less problematic substitute products, especially of bismuth vanadate and high-value organic, temperature-stable yellow and red pigments.

scholarly journals Glutathione-coated Cadmium-Sulfide Crystallites in Candida glabrata

1989 ◽  
Vol 264 (29) ◽  
pp. 17355-17360
Author(s):  
C T Dameron ◽  
B R Smith ◽  
D R Winge
Keyword(s):  
Cadmium Sulfide ◽  
Candida Glabrata

scholarly journals Potential Harm of Maltodextrin‐Coated Cadmium Sulfide Quantum Dots in Embryos and Fetuses

10.5772/64653 ◽  
2016 ◽  
Author(s):  
Jorge Reyes-Esparza ◽  
Janet Sánchez-Quevedo ◽  
Antonieta Gómez-Solís ◽  
Patricia Rodríguez-Fragoso ◽  
Gerardo González De la Cruz ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cadmium Sulfide ◽  
Potential Harm
Sign in / Sign up

Export Citation Format

Share Document