<i>The Nature of Light and Colour in the Open Air</i>

Minnaert, M. G. J.; Wuensch, S.

doi:10.1063/1.3061436

Cited by 175 publications

(148 citation statements)

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“…Typically, perceptual discrimination is inferior with the successive condition since the final perceptual report is dependent upon an integration of a series of separate stimulus inputs and thus susceptible to memorial influence (see Bartley, 1972;Cutsforth, 1951). Minnaert (1954) even suggests that some "immediately experienced" spatial illusions are dependent upon a memorial component. The present experiment was primarily interested in comparing simultaneous matching with subjects' memory of specific orientations.…”

Section: Discussionmentioning

confidence: 99%

Perceptual orientational asymmetries: A comparison of visual and haptic space

Lechelt

Eliuk

Tanne

1976

Perception & Psychophysics

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Stimulus orientation discrimination was investigated in visual and haptic modalities under conditions of simultaneous matching and memory. Discrimination of vertical and horizontal was significantly more accurate than discrimination of oblique stimulus orientations (450, 135°, 225 0, and 315°) for both modalities; haptic errors, however, were significantly greater at each orientation. While subjects were reliably more accurate in visually matching oblique stimulus orientations to a standard than producing them from memory, for the haptic modality, differences between memory and matching conditions wereless consistent across the orientations sampled.

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Section: Discussionmentioning

confidence: 99%

Perceptual orientational asymmetries: A comparison of visual and haptic space

Lechelt

Eliuk

Tanne

1976

Perception & Psychophysics

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“…For this very reason, since Aristotle the "flattened sky" was stated to be a mere illusion. The claim of the sky not changing from day to night contradicts, however, to the evidence of senses (Hershenson, 1989;Minnaert, 1940) and the scientific account, as well.…”

Section: Discussionmentioning

confidence: 86%

The sky as a topic in science education

2004

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ABSTRACT:The concepts of sky and visibility distance, as perceived by different learners, are investigated for the first time as a subject of a science education research. Mental models of students with regard to the subject were elicited. They were interpreted in terms of two-level hierarchy: schemes and facets-of-knowledge (defined in the paper). Our results suggest that many students do not consider sky to be a scientific (physical) concept. The majority perceives the sky as having an oblate profile. Among the parameters that determine this profile were mentioned daytime, atmosphere, geometry of the situation, and weather conditions. The students hold two major explanatory views (schemes) with regard to the sky: "the sky is the atmosphere" and "the sky is the appearance of space." With regard to the visibility distance, the two following schemes prevail: "vision weakens with the distance" and "natural obstacles determine vision distance." No significant correlation was found between the views regarding the sky appearance and the vision distance. Students do not relate Moon illusion to the profile of sky or visibility distance. The notions of sky and visibility distance are argued for inclusion into science curriculum, and implications of the findings to a constructivist instruction of the considered concepts and phenomena are discussed.C

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“…This nocturnal effect is known to most astronomers but it is rarely described. It is briefly treated in the delightful little book entitled "Light and Colour in the Open Air" by M. Minnaert (1954). From the altitudes of the glows above cities, the linear height of the ceiling of the cloud layer can be derived if the distances to the cities are known and vice versa.…”

Section: The Estimation Of Urban Populationsmentioning

confidence: 99%

The Measure of Light Pollution and the Populations of Cities

Upgren¹

1991

International Astronomical Union Colloquium

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A program to measure the night sky brightness has been in progress for some years in order to calibrate the extent of the night sky brightness surrounding the Van Vleck Observatory. Both the central intensity and the areal extent of the brightest sky caused by campus and city were repeatedly measured in order to gauge the extent of the problem. For this purpose, portable visual photometers were designed which have remained stable and usable for nearly a decade. They are now useful for the measurement of the effects of increases in urban growth and of the more flexible attitude of the campus administration toward excess campus lighting. The inability to define city populations which realistically model and predict the measured sky brightness is the largest source of uncertainty.

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The Nature of Light and Colour in the Open Air

Cited by 175 publications

References 0 publications

Perceptual orientational asymmetries: A comparison of visual and haptic space

Perceptual orientational asymmetries: A comparison of visual and haptic space

The sky as a topic in science education

The Measure of Light Pollution and the Populations of Cities

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