Gourt > Science > Physics > Optics > Color
Color or colour (see spelling differences) is a property of light that is determined by its wavelength (or by its composition as a blend of several wavelengths). The range of visible wavelengths of light is known as the visible spectrum, or simply the spectrum.
The term color may also refer to a property of objects or materials, determined by which wavelengths of light they reflect, transmit, or emit. Typically only features of the composition of light that are detectable by humans are included, so color may also be considered a psychological phenomenon. Regimenting these various uses of the term is a major task in current philosophy.
Since perception of color stems from the varying sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined by the degree to which they stimulate these cells. The physiology of color is discussed below.
More on [ Color ]
Pigments :: Dyes and Pigments
Colors :: Web
Color Blindness
Light and Optics :: Education
Color :: Sensation and Perception
Bi-Hamiltonian structures for integrable systems on regular time scales
Blazej M. Szablikowski, Maciej Blaszak, and Burcu Silindir A construction of the bi-Hamiltonian structures for integrable systems on regular time scales is presented. The trace functional on an algebra of delta-pseudodifferential operators, valid on an arbitrary regular time scale, is introduced. The linear Poisson tensors and the related Hamiltonians are d ... [J. Math. Phys. 50, 073502 (2009)] published Thu Jul 2, 2009.
Hill's equation with random forcing parameters: The limit of delta function barriers
Fred C. Adams and Anthony M. Bloch This paper considers random Hill's equations in the limit where the periodic forcing function becomes a Dirac delta function. For this class of equations, the forcing strength q, the oscillation frequency lambda, and the period (Deltatau) are allowed to vary from cycle to cycle. Such equations arise ... [J. Math. Phys. 50, 073501 (2009)] published Thu Jul 2, 2009.
Quasiperiodic solutions for the cubic complex GinzburgLandau equation
Hongzi Cong, Jianjun Liu, and Xiaoping Yuan The existence of two-dimensional KolmogorovArnoldMoser invariant tori is proved for cubic complex GinzburgLandau equation of higher spatial dimension. As a consequence, the equation possesses a Cantorian branch of nontraveling-wave quasiperiodic solutions of two-dimensional frequency vector. ... [J. Math. Phys. 50, 063516 (2009)] published Tue Jun 30, 2009.
physicsworld.com: headline news
Single molecule switches light
Thu, 02 Jul 2009 10:15:57 -0000
World's smallest optical transistor brings optical computers a step closer
Alan Guth bags Isaac Newton medal
Wed, 01 Jul 2009 08:05:27 -0000
Inflationary universe pioneer to be honoured in London
Intense X-rays expose Alzheimer’s disease
Tue, 30 Jun 2009 14:08:36 -0000
Diffraction enhanced X-ray imaging promises better brain scans
Physics Today magazine
Industrial R&D in transition
Wed, 01 Jul 2009 08:00:00 -0500
An American Institute of Physics study completed in 2008 documents the ways in which the corporate physicist’s work has changed in the past 40 years. Here are its major findings
Population genetics and range expansions
Wed, 01 Jul 2009 08:00:00 -0500
On a molecular level and at the frontiers of expanding habitats, large stochastic fluctuations can obscure signals of Darwinian evolution
The dichotomous history of diffusion
Wed, 01 Jul 2009 08:00:00 -0500
Nearly a century after the equations of physical diffusion and stochastic diffusion were formulated, Albert Einstein united the observable and the abstract to establish a molecular–kinetic theory of heat
Absorption of Solar Energy by Different Colors - A simple experiment testing the effect color has on the absorption and reflection of solar energy.
Causes of color - Explore the phenonmena that create our colorful world.
Meta Description: [ Why are things colored? Explore the fifteen phenonmena that create our colorful world ]
Color FAQ - Clarifies aspects of colour specification and image coding that are important to computer graphics, image processing, video, and the transfer of digital images to print.
Color Matters - Several resources about color and its relationship with other human activities.
Meta Description: [ Explore how color affects emotions, appetite, vision, sexuality, design, art, businss, marketing, and trends. Learn about color theories in art, nature, science and psychology. Bulletin board, global color survey, research, and more. ]
404
Colorworm Explains Color: A Free Book - Both a science and an art book, Colorworm explains the electromagnetic spectrum, visible light, how we see, mixing paint, RGB, and CMYK with library look-up and a storytime cut-out. Target audience is grades K-8.
Colour Info Page - A rapidly growing site covering many aspects of colour science.
Colour Physics FAQ - Concerns the measurement and control of coloured surfaces such as plastics, textiles, and surface coatings. It is intended for practitioners rather than theoreticians.
Meta Description: [ Colour Physics FAQ ]
efg's Computer Lab: CIE Chromaticity Diagrams - Demonstrate how to display a 1931 CIE chromaticity chart, as well as the transformations needed for the 1960 and 1976 charts. The charts can be displayed using either the 1931 2-degree or 1964 10-degree standard observer.
Meta Description: [ efg's Computer Lab: CIE Chromaticity Diagrams ]
efg's Computer Lab: Color Mix Lab Report - Interactive demonstration of mixing additive or subtractive colors.
efg's Computer Lab: Maxwell Triangle Lab Report - Demonstrate mixture of light with three primaries. Introduce concept of chromaticity coordinates.
efg's Computer Lab: Spectra Lab Report - A complete Delphi program, including source code, to display wavelength colors as a function of wavelength and optionally display the emission and absorption spectra of hydrogen.
Meta Description: [ Show approximation of RGB colors by wavelength ]
Glossary of Color Science Terms - When one speaks about color, some of these terms are sure to be used.
Molecular Expressions: Science, Optics and You - An educational resource for the science of optics and the physics of light and color intended for teachers, students, and the general public.
Meta Description: [ Science, Optics and You is an educational resource for the science of optics and the physics of light and color intended for teachers, students, and the general public. ]
Munsell Color Science Laboratory - Academic laboratory dedicated to research and education in color science, based at Rochester Institute of Technology.
Theory of Color - Unconventional way of classifying and teaching colors.
Meta Description: [ Understanding colour on a rational basis. Teaching and understanding colour without confusion, while taking account of biology, art and physics. ]
Whiteness - Explanation of applying fluorescent whitening agents to increase perceived whiteness.
Meta Description: [ Application of Fluorescent Whitening Agents to increase perceived whiteness ]
| Jamey Johnson - In Color: Video - Closed Captioned | |
| Next Video | |
