PPT-Light & Color

When Light Strikes an Object When light strikes an object the light can be A bsorbed take it in R eflected bounce offscatter T ransmitted carrying itmoving it Materials can be classified as. CMSC 435/634. Light. Electromagnetic wave. E & M perpendicular to each other & direction. Photon wavelength . l. , frequency f = c/. l. Visbile. . l. ≈ 380 nm (blue) to 720 nm (red). Photon energy q = h f = h c/. Color is a psychophysical concept depending both upon the spectral distribution of the radiant energy of the illumination source and the visual sensations perceived by the viewer. Color perception depends mainly upon the physics of light and the physiology of the visual system, which results in the following psychological color sensations:. Color. Color and Light. It is our intent and desire to encourage wide dissemination of this material for educational purposes. To allow that, you are hereby granted a license under the copyrights in the material and may freely copy, display, distribute, and publicly perform the materials in whole or in part for educational purposes, provided 1) you continue to include the copyright notice on the materials; 2) you do not use the materials, or parts of them, in a manner which would reasonably be considered to be de con. microdisks. "Second-harmonic generation using -quasi-. phasematching. in a . GaAs. whispering-gallery-mode . microcavity. ," . P. . Kuo. , J. Bravo-Abad, G.S. Solomon, Nature Communications, 5, 3109 (2014. Beginning Art . What is . COLOR. ?. An . art element. . with three properties:. Hue . Value . Intensity . Also. , the character of surfaces created by the response of vision to wavelengths of reflected light.. Light. The Electromagnetic Spectrum. :. E. = . h. n. Light . . Color. When light impinges on a surface, lots of things can happen:. e- of the atoms absorb . some. of the photons. Followed by possible vibrational relaxations in excited states. Review worksheet. 1. . A light wave is an electromagnetic wave which has both an electric and magnetic . component associated . with it. Electromagnetic waves are often distinguished from mechanical waves. . Analyze how color can be used to create moods and illusions. Explain how primary colors are used to produce other colors on the color wheel. Describe the effects of intensity and value on various hues. Eric King. Humans perceive color when light enters the eye and is detected by the photoreceptors, called cones, which are mainly located in the fovea. We have trichromatic color vision which means we have three different kinds of cones that detect a specific wavelength of light, namely short (blue), medium (green), and long (red). How we perceive color also depends on how dim or bright the light is. . Introduction - What causes the color of an object?. We see most objects because light . bounces off them. and then travels to our eyes. This is called . reflection. . . Ask students if they can name some objects that reflect ALL of the light that reaches them.. Have more fun painting!. Mark Geiger. Friday, December 3, 2021. 10:00 to 12:00. Spring Hill Community Center. 8946 Yellow Daisy Place. Lorton, VA 22079. Using the Color Wheel . Objectives. Learn how to mix colors when painting. Why do we see what we see?. Color. The property possessed by an . object. of producing different sensations on the . eye. as a result of the way the object reflects or transmits . light. .. Light. transmission. Black is the absence of light.. This font is black because no light is shining here. . The light shines all around it making white. . Mixing colors. By mixing different colors you can create new colors.. INTD 302. ASSOC PROF DR NOOR HANITA ABDUL MAJID. Photopic. : color vision takes palace under bright conditions. Revision-what happens in the eyes?. 1. Light . from an external object is refracted as it moves through the cornea, .