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Group Work Why do cooler objects emit a greater fraction of their energy at long wavelengths (low frequencies)?
Light and Color Chapters 26–27
Today’s Objectives Explain how the human eye identifies colors. Explain how colors are produced by absorption, dispersion, and scattering.
How Human Color Vision Works Source: Griffith, Physics of Everyday Phenomena 424530 560
Poll Question What color do we see when green and red receptors are stimulated equally? A. Cyan. B. Blue. C. Yellow. D. Magenta.
Poll Question What color do we see when blue and red receptors are stimulated equally? A. Cyan. B. Blue. C. Yellow. D. Magenta.
Bird and Reptile Color Vision Source: Scientific American, July 2006
Reflection and Transmission (and absorption)
Chlorophyll absorbs blue and red light. What color does it appear? A. red B. yellow C. green D. violet Poll Question
In color printing, which two color inks are combined to make the color orange? Poll Question A.Cyan and Magenta. B.Cyan and Yellow. C.Yellow and Magenta.
Fluorescent Light Not “Natural” Source: www.korry.com/products/nightshield/fluor_light.stm
Colors Split by Dispersion Source: Griffith, Physics of Everyday Phenomena, 4 ed.
Speed in Glass Depends on Index of refraction n = c/v c = vacuum speed v = speed in medium
Poll Question Which is faster in glass? 1.Blue light. 2.Red light. 3.Both have the same speed.
Source: Griffith Prism Separates White Light
Board Work What is wrong with this famous picture?
Dispersion Creates Rainbows Source: Griffith
Primary Rainbow: 1 Reflection Source: Griffith, Physics of Everyday Phenomena 40° 42°
Secondary Rainbow: 2 Reflections Source: Griffith 54.5° 52°
Viewing Both Rainbows Source: Ackerman and Knox, Meteorology
Rayleigh Scattering Why the sky is blue and sunsets are red
Blue Scatters; Red Passes Source: Griffith
Reading for Next Time Atomic Structure –Nuclear composition –Naming isotopes Radioactivity –Nuclear forces –Half-life –Decay types
Color. What is Color? The color of an object is produced by light frequencies that are emitted or reflected off of objects and perceived by our eyes.
KeiErica Perry & LeAmbreya Long. The colors around you are due to the way the objects reflect light Different materials have different natural frequencies.
Pg F46-F47. sunlight passes through water droplets in the air and refracts by the prism The colors are spread out from white light to red, orange,
Light and Optics PHYS 1090 Unit 8. Speed of Light c = 10 8 m/s (in vacuum)
Here ’ s Looking at hue, Kid You have probably noticed that the COLOR of an object can appear different under different lighting conditions.
Color White is the combination of all colors. Spectrum Sunlight can be split into its component colors Called the color spectrum (Roy G. Biv) Red
Wave Model of Light – Explains most properties of light – Uses both light and waves to transfer energy, and they both go outward in all directions from.
Colors in Nature. Dispersion of Light in a Prism Colors separate Violet has the highest ƒ (shortest λ), therefore it disperses the most because it interacts.
Electromagnetic Waves and Color Physics Mrs. Coyle.
COLOR AND LiGHT BY ASHANTi’ DAViS & SATORiA PATTON.
Color and Vision General Physics. Band of Visible Light ROYGBIV (Red, Orange, Yellow, Green, Blue, Indigo, Violet)
+ Chapter 2: Section 2 Visible light and Color. + When light strikes an object, it is reflected, transmitted, or absorbed. Light ON Light OFF.
Chapter 18: The Electromagnetic Spectrum and Light Section 3: The Behavior of Light Section 4: Color.
Warm Up Where does all light come from? Do different colors of light have different intensities? If so, what color has the greatest intensity? When two.
Chapter 14 Light and Color Electromagnetic Spectrum Figure 14.3 If strike charged metal to and fro in empty space, get electromagnetic waves Classification.
White light is composed of all the colours of light White colour can be created by combining the three PRIMARY colours (red, green, and blue) of.
Chapter 27 Light. The Definition of Light The current scientific definition of Light is a photon carried on a wave front. This definition incorporates.
SNC2D. Primary LIGHT colours are red, green, and blue SECONDARY light colours are created by combining only two of the three primary colours of light.
Electromagnetic Waves and Color. Color Color is the perceptual quality of light. Color is the perceptual quality of light. The human eye can distinguish.
Vocabulary Mini-Review EM Spectrum & Light. What part of the EM spectrum is used for communication? Radio Waves.
Light and Color Section 4. Light and Matter When light strikes any matter it can interact with matter in 3 different ways: It can be: reflected, absorbed.
10.1 Wave model of light Colour Theory. Wave Model of light Remember: Light waves transfer energy Light moves outward in all directions from its source.
CP Physics Mr. Miller. General Information Sir Isaac Newton – first to realize white light composed of different colors Prisms – separate white light.
Electromagnetic Waves and Color Physics Ms. Shaver.
COLORCOLORCOLORCOLORLIGHTLIGHT&. Very Important Concepts We only “see” what reaches our eyes! We only “see” what reaches our eyes! When light reaches.
INTRO TO LIGHT. Learning Scale 4 – Design an experiment to show how waves move at different speeds through different materials. 3 – Explain why waves.
Do Now Question: Why/how do you think we see colors? CRO Format 5/11.
Colors. Isaac Newton was the first to make a systematic study of color. Passing sunlight through a glass prism, Newton showed that sunlight is composed.
Light and Sound In this unit: 1)Properties of light 2)Reflection 3)Colors 4)Refraction.
Chapter 19 Light. Objectives 19.1 Contrast EM waves with other kinds of waves 19.1 Describe the arrangement of EM waves on the EM spectrum 19.1 Explain.
METR125: Light, Color, and Atmospheric Optics et130/notes/chapter19/color.html.
How do we see colour?. Electromagnetic Energy being transferred by the Sun.
COLOR PHYSICS By Camri Mason. THE DISCOVERY Newton was the 1 st person to discover the spectrum. His experiment consisted of the a triangular prism, white.
1. When light strikes any form of matter, it can interact with the matter in three ways: It can be reflected. It can be absorbed. It can be transmitted.
Chapter 28: Color. The Color Spectrum Isaac Newton and his prism The spectrum (ROYGBIV) White light –Combination of all colors –Whit objects appear white.
COLORCOLOR. The Color Spectrum The spread of colors from white light when passed through a prism or diffraction grating. –Red, Orange, Yellow, Green,
ColorColor. Isaac Newton first studied light when he used a piece of glass and first saw the color spectrum.
Light. Colour How do we see colours? White light, the light you see from globes, fluorescent tubes or the sun, is made up of lots of different colours.
ColorColor. The Color Spectrum Isaac Newton passed a narrow beam of sunlight through a triangular-shaped glass prism showed that sunlight is composed.
18.4 Color This student is looking at many colors on his computer screen. What he is actually seeing, however, are combinations of only three colors of.
Ch. 2 section 2 Visible Light and Color. Visible light When light strikes an object, the light can be ….. Reflected Transmitted absorbed Most.
IPC Notes Light & Color. The colors of light that we see are the colors of light that an object reflects towards our eyes. ex) blue jeans absorb all colors.
Light and Color EQ: How does light interact with matter?
White Light The combination of all the colors. Sunlight is an example of white light. Newton showed that the colors in the spectrum were a property not.
Sound and Light ISCI Sound and Light Travel in waves Waves - vibrations Sound – Propagation of vibrations through a medium (solid, liquid, gas)
Click on the objects to find out and learn about light.
REFRACTION. When light travels from one material to another it usually changes direction The bending of light that occurs at the borderline of two materials.
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