Results 291 to 300 of about 2,016,170 (332)

Photographic magnitudes of bright stars near the North Pole (Errata: 6 224)

, 1931
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Magnitude Estimation of the Brightness of Brief Foveal Stimuli

Science, 1962
Eighteen observers judged the apparent brightness of light flashes that varied in both duration and luminance. The median numerical estimations (made relative to a standard flash) confirmed three principles: the reciprocity between luminance and duration (Bloch's law), the enhancement of brightness at about 50 milliseconds (Broca-Sulzer effect), and ...
D. Raab
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Magnitude estimations and category judgments of brightness and brightness intervals: A two-stage interpretation.

Journal of Experimental Psychology, 1970
D. W. Curtis
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Magnitude judgments of brightness and brightness difference as a function of background reflectance.

Journal of Experimental Psychology, 1972
D W, Curtis, S J, Rule
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Comparison of Psychophysical Methods for Brightness Scale: Magnitude Estimation and Magnitude Production

Journal of Korea Society of Color Studies, 2022
The psychophysical experimental methods affect the observer???s evaluation because of the bias error. Therefore, it is necessary to design experiments properly. In this study, the experimental methods were compared for the brightness scale experiment, and the effect of stimuli setting was investigated. Magnitude estimation and magnitude production were
Garam Seong, Youngshin Kwak
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Effects of magnitude of reward in spatial and brightness discrimination tasks.

Journal of Comparative and Physiological Psychology, 1968
T. Waller
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Magnitude Estimations of Brightness for Lights of Different Wavelengths

The Journal of General Psychology, 1974
Summary A magnitude estimation procedure was used to obtain brightness estimations for 16 subjects with the use of lights of different wavelengths. Color filters were combined to produce wavelength bands of 460–470 nm, 520–540 nm, 590–610 nm, and 680–700 nm and light intensity was varied over a wide range by neutral density filters.
R C, Ciardullo, R L, Gallon
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Four-Component Modeling of Brightness Profiles of Spiral Galaxies and Model Total Magnitudes

AIP Conference Proceedings, 2011
We present an improved decomposition method in the spirit of the method of Kormendy (1970). We account 4 profile components: kernel, bulge, disk and halo (or thick disk). Each component may be fitted by the Sersic “1/n” law with user supplied n of code derived optimal n.
Ts. B. Georgiev, Ivan Zhelyazkov, Todor Mishonov   +2 more
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First Magnitude: A Book of the Bright Sky, by James B. Kaler

Contemporary Physics, 2013
Let us suppose that you are to enable pre-school or primary-school students to know what science is, what are scientific problems and so forth.
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