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LIGHT Waves carry energy from one place to another © 2000 Microsoft Clip Gallery
LIGHT: What Is It? Light Energy Atoms As atoms absorb energy, electrons jump out to a higher energy level. Electrons release light when falling down to the lower energy level. Photons - bundles/packets of energy released when the electrons fall. Light: Stream of Photons © 2000 Microsoft Clip Gallery
Electromagnetic Waves Speed in Vacuum 300,000 km/sec 186,000 mi/sec Speed in Other Materials Slower in Air, Water, Glass © 2000 Microsoft Clip Gallery
Electromagnetic Spectrum © 2000 Microsoft Clip Gallery
Electromagnetic Spectrum Visible Spectrum – Light we can see Roy G. Biv – Acronym for Red, Orange, Yellow, Green, Blue, Indigo, & Violet. Largest to Smallest Wavelength.
Color of Light Transparent Objects: Light transmitted because of no scattering Color transmitted is color you see. All other colors are absorbed. Translucent: Light is scattered and transmitted some. Opaque: Light is either reflected or absorbed. Color of opaque objects is color it reflects. © 2000 Microsoft Clip Gallery
Color of Light (Cont.) Color of Objects White light is the presence of ALL the colors of the visible spectrum. Black objects absorb ALL the colors and no light is reflected back. © 2000 Microsoft Clip Gallery
Color of Light (Cont.) Primary Colors of Light Three colors that can be mixed to produce any other colored light Red + blue + green = white light Complimentary Colors of Light Two complimentary colors combine to make white light-Magenta,Cyan,Yellow © 2000 Microsoft Clip Gallery
Paint Pigments Pigments absorb the frequency of light that you don’t see and reflects the color that you do see. Primary pigments Yellow + cyan + magenta = black Primary pigments are compliments of the primary colors of light. © 2000 Microsoft Clip Gallery
Complementary Pigments Green, blue, red Complimentary pigments are primary colors for light! © 2000 Microsoft Clip Gallery
LIGHT & ITS USES Sources of Light Incandescent light – light produced by heating an object until it glows. © 2000 Microsoft Clip Gallery
LIGHT & ITS USES Fluorescent Light – Light produced by electron bombardment of gas molecules Phosphors absorb photons that are created when mercury gas gets zapped with electrons. The phosphors glow & produce light. © 2000 Microsoft Clip Gallery
LIGHT & ITS USES - Neon Neon light – neon inside glass tubes makes red light. Other gases make other colors. © 2000 Microsoft Clip Gallery
LIGHT & USES: Optical Instruments LASERS Acronym: Light Amplification by Stimulated Emission of Radiation Coherent Light – Waves are in phase so it is VERY powerful & VERY intense.
LIGHT & USES: Optical Instruments LASERS Holography – Use of Lasers to create 3-D images Fiber Optics – Light energy transferred through long, flexible fibers of glass/plastic Uses – Communications, medicine, t.v. transmission, data processing.
WAVES: LIGHT Waves carry energy from one place to another © 2000 Microsoft Clip Gallery.
LIGHT and COLOR © 2000 Microsoft Clip Gallery. Albert Einstein.
WAVES: SOUND & LIGHT Waves carry energy from one place to another © 2000 Microsoft Clip Gallery.
Electromagnetic Waves Waves carry energy from one place to another.
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.
WAVES: LIGHT moving Waves carry energy from one place to another.
Electromagnetic Waves and Light
Bell Work 1.What are three basic behaviors of light waves? 2.Explain how the human eye sees an object’s color? 3.What is a prism?
Light Chapter 13.
The electrons within atoms are the sources of all light.
Now let’s focus on… The visible spectrum The visible spectrum –Light and pigment.
MAP TAP The Electromagnetic Spectrum1 Light and the Electromagnetic Spectrum Chapters 22 & 23.
Light II. Light and Color (p ) Light and Matter Seeing Colors Mixing Colors.
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
Waves carry energy from one place to another
E-M Spectrum and Waves Prentice Hall Chapter 18.
Chapter 18: The Electromagnetic Spectrum and Light
WAVES: SOUND & LIGHT Waves carry energy from one place to another © 2000 Microsoft Clip Gallery Visit For.
Light and Color. Light interacting with matter When light hits matter, at least one of three things can happen: – Reflection When light bounces off an.
And Elvis said ……… ……Let there be Light The Visible Spectrum.
Light and Color. Light interacting with matter When light hits matter, at least one of three things can happen: Reflection When light bounces off an object.
LIGHT. Key Points for today What are E-M Waves? Where does light fit in to all of this? Comparing λ and f for different E-M waves Reading quiz next day.
CP Physics Mr. Miller. General Information Sir Isaac Newton – first to realize white light composed of different colors Prisms – separate white light.
1. The blind spot of the human eye results from a) rods attached to the retina. b) cones attached to the fovea. c) a detached retina. d) the optic nerve.
Light and Color.
WAVES © 2000 Microsoft Clip Gallery Waves (Def.) – A wave is a disturbance that transfers energy. Waves carry energy from one place to another
COLOR Chapter 14, Section 4 Pg Pigment Colors Mixing color of pigment (i.e.) paints is different than mixing colors of light. Mixing color of.
Types of Energy Y7 Environmental Project GEL 2007.
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.
Electromagnetic Spectrum and Light Chapter 18. Electromagnetic Waves Transverse Waves Transverse Waves Consist of constantly changing fields Consist of.
Light Into Video https://www.youtube.com/watch?v=UZ5UGn U7oOI.
Electromagnetic Radiation (NB Pgs 7-9 odd) Picture pg 8.
Color. The Color Spectrum ROY G BiV Black and white Solar Spectrum Colors of Objects Check Question.
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.
Chapter 19 Light, Mirrors, and Lenses Section 1 Properties of Light Pages
Vocabulary Mini-Review EM Spectrum & Light. What part of the EM spectrum is used for communication? Radio Waves.
List four members of the electromagnetic spectrum. Two examples are light and radio waves. S-58 How are electromagnetic waves different from mechanical.
Light Chapter 12. Light and Matter Objects can absorb, reflect, or transmit light Depends on what material the object is made up of Typically, “shiny”
Introduction to Optics. 1. The Great Debate 2. What is light? 3. Properties of light 4. The wave-like model 5. Theories of colour.
Light & APPLICATIONS OF Optics
L ET THE LIGHT SHINE Sources of Light Luminous Produces light Incandescent Light due to high temperatures Electromagnetic Spectrum A range of electromagnetic.
Light and Color. Light basics Photons: –tiny wave-like particles of light –carry energy Light travels in –Rays: straight-line path of light in a vacuum.
Light (or the ELECTROMAGNETIC SPECTRUM)
Electromagnetic Spectrum ColorOptic Tools The Human Eye Grab Bag
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