LIGHT Waves carry energy from one place to another © 2000 Microsoft Clip Gallery.

Slides:

Advertisements

Similar presentations

LIGHT and COLOR © 2000 Microsoft Clip Gallery. Albert Einstein.

Advertisements

Electromagnetic Spectrum

Waves carry energy from one place to another

Electromagnetic Radiation

Electromagnetic Waves and Light

MAP TAP The Electromagnetic Spectrum1 Light and the Electromagnetic Spectrum Chapters 22 & 23.

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.

Chapter 18: The Electromagnetic Spectrum and Light

Light Chapter 13.

CP Physics Mr. Miller. General Information  Sir Isaac Newton – first to realize white light composed of different colors  Prisms – separate white light.

Vocabulary Mini-Review EM Spectrum & Light. What part of the EM spectrum is used for communication? Radio Waves.

WAVES: LIGHT Waves carry energy from one place to another © 2000 Microsoft Clip Gallery.

E-M Spectrum and Waves Prentice Hall Chapter 18.

Light and Color.

And Elvis said ……… ……Let there be Light The Visible Spectrum.

The electrons within atoms are the sources of all light.

Introduction to Optics. 1. The Great Debate 2. What is light? 3. Properties of light 4. The wave-like model 5. Theories of colour.

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.

Electromagnetic Waves

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.

Electromagnetic Spectrum and Light Chapter 18. Electromagnetic Waves Transverse Waves Transverse Waves Consist of constantly changing fields Consist of.

WAVES: LIGHT moving Waves carry energy from one place to another.

Electromagnetic Radiation (NB Pgs 7-9 odd) Picture pg 8.

S-58 How are electromagnetic waves different from mechanical 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.

Now let’s focus on… The visible spectrum The visible spectrum –Light and pigment.

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.

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.

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.

Types of Energy Y7 Environmental Project GEL 2007.

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?

WAVES © 2000 Microsoft Clip Gallery  Waves (Def.) – A wave is a disturbance that transfers energy.  Waves carry energy from one place to another 

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.

Light and Sound. Sound Sound is a longitudinal wave Sound causes compressions and rarefactions in the air molecules Sound must travel through a material.

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.

Light Into Video U7oOI.

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”

Color. The Color Spectrum ROY G BiV Black and white Solar Spectrum Colors of Objects Check Question.

Light II. Light and Color (p )  Light and Matter  Seeing Colors  Mixing Colors.

WAVES: SOUND & LIGHT Waves carry energy from one place to another © 2000 Microsoft Clip Gallery.

Chapter 19 Light, Mirrors, and Lenses Section 1 Properties of Light Pages

Waves carry energy from one place to another

Light and Color.

Light and Color Vocabulary

Waves carry energy from one place to another

Waves carry energy from one place to another

Q: Which travels faster, sound or light?

CHAPTER 14 LIGHT AND COLOR

Light and Color.

I. Electromagnetic Waves & Radiation

18.1: Light Key concepts: What happens to the light that strikes an object? What determines the color of an opaque, transparent, or translucent object?

© 2000 Microsoft Clip Gallery

Waves carry energy from one place to another

How would you describe the color RED to a person who cannot see?

Light Investigate the properties and behaviors of mechanical and electromagnetic waves Explore and explain the nature of sound and light energy.

An Electromagnetic Wave

Light Intro Video

LIGHT how it works.

Bell Work: Spring Break

Light and Color Section 4.

Presentation transcript:

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.