<i>Light and Color in Nature and Art</i>

Williamson, Samuel J.; Cummins, H. Z.; Kidder, John N.

doi:10.1119/1.13928

Cited by 69 publications

(88 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3). Each cone contains unique pigments that respond to a different range of visible wavelengths (Williamson and Cummins 1983). These cones are sometimes called red, green, and blue cones, although the red wavelength cone response is actually centered in the yellow region of the visible spectrum.…”

Section: Resultsmentioning

confidence: 99%

“…Color modeling-The Commission Internationale de l'Ê clairage (CIE) developed a universally recognized objective system of colorimetry whereby the spectral distribution of light can be used to derive Y, the luminance or brightness, and two chromaticity parameters, x and y, representing the hue and saturation (Williamson and Cummins 1983). This system is based on color matching functions (tristimulus functions) that have been derived for the average human subject and are considered to be reasonably accurate and reproducible.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Red and black tides: Quantitative analysis of water‐leaving radiance and perceived color for phytoplankton, colored dissolved organic matter, and suspended sediments

Dierssen

Kudela

Ryan

et al. 2006

Limnology & Oceanography

138

View full text Add to dashboard Cite

Using field measurements and quantitative modeling, we demonstrate that red coloration of the sea surface is not associated with any particular group of phytoplankton and is strongly dependent on the physiology of the human visual system. Red or brown surface waters can be produced by high concentrations of most types of algae, colored dissolved organic matter, or suspended sediment. Even though light reflected by red tides commonly peaks in the yellow spectral region (570-580 nm), human color perception requires consideration of the entire spectrum of light relative to receptors within the human eye. The color shift from green to red is not due to any special optical properties of the algae but results from an overlap in spectral response of the eye's red and green cones (centered at 564 and 534 nm, respectively). The spectral peak in light reflected from dense algal blooms coincides with a critical hinge point in color vision (570-580 nm), where fine-scale shifts in the spectral shape of water-leaving radiance due to algal absorption and backscattering properties lead to pronounced variations in the observed color. Of the taxa considered, only Chlorophytes and Prochlorophytes lacked sufficient accessory pigments to produce a red tide. Chlorophyll fluorescence and enhanced near-infrared reflectance (the ''red edge'') contribute negligibly to the perceived color. Black water events are produced when water is highly absorbing but lacks backscattering constituents.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Red and black tides: Quantitative analysis of water‐leaving radiance and perceived color for phytoplankton, colored dissolved organic matter, and suspended sediments

Dierssen

Kudela

Ryan

et al. 2006

Limnology & Oceanography

138

View full text Add to dashboard Cite

show abstract

“…Hereafter, we refer to all light levels as perceived by the alewife eye in units of alelux. The constant in front of the photopic lux curve represents the absolute value of luminous efficacy (683 lumens watt 21 ) at l max 5 555 nm (Williamson and Cummins 1983). Because the absolute value of luminous efficacy at l max is not known for alewife, we set the value of this constant to equal one in Eq.…”

Section: Methodsmentioning

confidence: 99%

Light effects on alewife‐mysid interactions in Lake Ontario: A combined sensory physiology, behavioral, and spatial approach

Boscarino

Rudstam

Tirabassi

et al. 2010

Limnology & Oceanography

View full text Add to dashboard Cite

An understanding of the effect of light on predator-prey interactions in aquatic systems requires the integration of sensory physiology, behavioral ecology, and spatial distributions of predator and prey in the field. Here, we present such an integrative approach to a study on the interactions between the alewife, Alosa pseudoharengus, and the mysid shrimp, Mysis diluviana, (formerly M. relicta) in Lake Ontario at night, when it is unknown whether visual feeding is possible. Visual pigment analyses of alewife rod photoreceptors were used to derive an alewife-specific unit of brightness-the 'alelux' (wavelength of maximum absorbance, l max 5 505 nm)-which formed the basic unit of light intensity in alewife feeding-rate experiments and field applications. At light levels of 10 27 alelux (, 10 24.1 lux) and greater in the laboratory, alewives engaged in visual search and strike behaviors and fed at rates that were significantly higher than those under completely dark conditions. Field observations from Lake Ontario showed that light levels at the upper edge of the mysid distribution were within the range of those required for visual feeding in the laboratory on a full moon night, but not on a new moon night. These increased light levels translated into feeding rates that were . 30 times higher on the full moon night, despite a larger degree of spatial separation of the two trophic levels. We hypothesize that observed increased water clarity in Lake Ontario in recent years has led to increased consumption of mysids by alewife at night and associated food-web changes.

show abstract

“…This range of wavelengths spans practically from zero to near infinity and can be broadly divided into regions as shown in Table 1 [7], which includes radio waves, infrared, visible, ultraviolet, X-rays, and gamma rays. This division is not exact since there is a gradual transition from one region to the next, which is shown schematically in Fig.…”

Section: Properties Of Electromagnetic Wavesmentioning

confidence: 99%

Light, Electromagnetic Spectrum

Zwinkels

2015

Encyclopedia of Color Science and Technology

View full text Add to dashboard Cite

Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.https://doi.org/10.1007/978-3-642-27851-8_204-1 Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Light, electromagnetic spectrum Zwinkels, Joanne http://nparc.nrc-cnrc.gc.ca/fra/droits L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site

show abstract

Light and Color in Nature and Art

Cited by 69 publications

References 0 publications

Red and black tides: Quantitative analysis of water‐leaving radiance and perceived color for phytoplankton, colored dissolved organic matter, and suspended sediments

Red and black tides: Quantitative analysis of water‐leaving radiance and perceived color for phytoplankton, colored dissolved organic matter, and suspended sediments

Light effects on alewife‐mysid interactions in Lake Ontario: A combined sensory physiology, behavioral, and spatial approach

Light, Electromagnetic Spectrum

Contact Info

Product

Resources

About