منابع مشابه
A High Precision Reflectometer for Submillimeter Wavelengths
A high precision reflectometer has been designed and implemented to measure directly the specular reflectance (R) of materials in the submillimeter (SM) region of the spectrum (300 GHz < ν < 3000 GHz). Previous laser-based measurement systems were limited to an uncertainty in R of approximately ± 1.0% due to a number of issues such as: lack of an absolute reflection standard, difficulties in th...
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A new design approach for low-cost multiprobe reflectometers is presented. While traditional circuits adopt equally spaced probes, the solution presented here provides a method to greatly enhance the bandwidth of the measuring system by a proper choice of each probe position. As an example, a five-probe (1–16) GHz reflectometer was designed and the measurement results compared to those obtained...
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A small, portable, battery-powered field reflectometer, which utilized an integrating sphere, was developed for measuring reflectance from soils and intact leaves. Its light source was a flashlight bulb; its wavelength selection within the range of 0.4 P to 1.1 04 was achieved with interference filters. Comparison with laboratory instruments was favorable. Additional index words: reflectance, s...
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cues and they often take precedence over intra-maze stimuli. One possible disadvantage of the present apparatus should be mentioned. A few Ss in the SOW group of each experiment were observed to strenuously oppose box withdrawal throughout training by wedging themselves into the corner between the fixed end wall and the moving floor and side walls. These Ss seldom avoided. Many other Ss display...
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Saeed Baghery was born in Amol/Mazandaran (Iran) in 1985. He completed his B.Sc. in Pure chemistry in 2009 from Islamic Azad University of Amol, Mazandaran, Iran. He was graduated from M.Sc. degree under the supervision of Dr. Seyed Mohammad Vahdat in Organic Chemistry from Islamic Azad University of Amol, Mazandaran, Iran. He is currently Organic Chemistry Ph.D student under the supervision of...
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ژورنال
عنوان ژورنال: Journal of Research of the National Bureau of Standards
سال: 1940
ISSN: 0091-0635
DOI: 10.6028/jres.025.010