Light II. Light and Color (p.528-535)  Light and Matter  Seeing Colors  Mixing Colors.

Slides:

Advertisements

Similar presentations

Electromagnetic Radiation

Advertisements

Electromagnetic Waves and Light

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

Light and Color Chapters 27 – 28 Created by N. Ferreira with the help of A, Kirby.

SP4 Students will investigate the properties of waves.

The Colour of Light & The Colour of Objects. Colour by Addition Sir Isaac Newton first discovered that visible (white) light was made up of many colours.

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.

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.

Light. A Dozen Facts About Light Light Fact 1: Light is a form of energy (energy is the ability to make things change),

Ch Waves & Sound I. Characteristics of Waves  Waves  Transverse waves  Longitudinal waves  Measuring waves.

Light and Color.

1 Light. 2 Visible Light Wavelengths range from 400 nm to 700 nm Longest wavelength = red Shortest wavelength = violet 1 nm = 1 x m.

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

The electrons within atoms are the sources of all light.

Light! Electromagnetic Waves: are vibrations of the electric and magnetic fields of moving charged particles. Electromagnetic Spectrum: is the complete.

Light and Sound In this unit: Properties of light Reflection Colours

Wave Interactions Chapter 18. Properties of Waves Reflection – ability of a wave to bounce off a surface it cannot pass through –Angle of Incidence –

What title would you give to each droodle?. Almost bald man with a split-end.

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.

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

Light 1)Properties of light 2)Reflection 3)Colors 4)Refraction.

Light and color.

Color and Vision General Physics. Band of Visible Light ROYGBIV (Red, Orange, Yellow, Green, Blue, Indigo, Violet)

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 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.

Electromagnetic Waves Waves carry energy from one place to another.

Light and Color There are 3 primary colors of light RED, GREEN, & BLUE

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

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.

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.

Colors of Pigment The primary colors of pigment are magenta, cyan, and yellow. [

Lesson 2. Review - Energy in a Wave A wave is a disturbance that transfers energy from one point to another without transferring matter. In a water wave,

Light, Mirrors, and Lenses O 4.1 Light. Light Properties  Light is made of photons-bundles of charged particles that have no mass.  Light travels in.

Light & Electromagnetic Radiation Ch. 19. Electromagnetic Radiation Electromagnetic waves are transverse waves created by the motion of electrically charged.

We need light to see objects Light is energy (electromagnetic). ts/science_what_is_light.htm.

Light Into Video U7oOI.

 There are 3 primary colors of light RED, GREEN, & BLUE  When these colors of light are mixed… White Light is produced  This process is called color.

Light and Color. An objects color depends on the wavelength of light it reflects and that our eyes detect. White light is a blend of all colors. When.

13.2 Light and Color We see color because white light strikes a surface and the color the surface is, is reflected back to your eye. All the other colors.

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.

Light and Sound In this unit: 1)Properties of light 2)Reflection 3)Colors 4)Refraction.

Light. Light In this unit: 1)Properties of light 2)Reflection 3)Colors 4)Refraction.

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

Standard: Explain how the human eye sees objects and colors in terms of wavelengths What am I learning today? How are wavelengths detected by the human.

A. Waves  Waves  rhythmic disturbances that carry energy through matter or space  Medium  material through which a wave transfers energy  solid, liquid,

Light and Color.

What title would you give to each droodle?

Light and Color light and color.

Light and Color.

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

Unit 4 Waves Properties of Light.

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

Light and The Electromagnetic Spectrum

BEHAVIOR OF LIGHT ,,,,,,,,,,,.

Light Intro Video

Wave Interactions Wave Interaction

Chapter 14: Light Section 2: Light and Color

Bell Work: Spring Break

Chapter 3 – Light 3.1 Light and Color.

Ch Light II. Light and Color (p ) Light and Matter

Ch Light II. Light and Color (p ) Light and Matter

Light and Color Section 4.

Light, Mirrors, and Lenses

Presentation transcript:

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

Properties of Light Light travels in straight lines: Laser

Light travels VERY FAST – around 300,000 kilometres per second. At this speed it can go around the world 8 times in one second.

LIGHT: What Is It?  Light Energy  Atoms Light and all EM radiation is created by electrically charged particles. 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

A. Light and Matter  Opaque  absorbs or reflects all light  Transparent  allows light to pass through completely  Translucent  allows some light to pass through

Reflection Reflection from a mirror: Incident ray Normal Reflected ray Angle of incidence Angle of reflection Mirror

B. Seeing Colors  White light  contains all visible colors - ROY G. BIV  In white light, an object…  reflects the color you see  absorbs all other colors REFLECTS ALL COLORS ABSORBS ALL COLORS

B. Seeing Colors  The retina contains…  Rods - dim light, black & white  Cones - color red - absorb red & yellow green - absorb yellow & green blue - absorb blue & violet Stimulates red & green cones Stimulates all cones

B. Seeing Colors  Color Blindness  one or more sets of cones does not function properly Test for red-green color blindness.

C. Mixing Colors  Primary light colors  red, green, blue  additive colors  combine to form white light View Java Applet on primary light colors.Java Applet on primary light colors  EX: computer RGBs

C. Mixing Colors  Filter  transparent material that absorbs all light colors except the filter color View Java Applet on filters.Java Applet on filters

C. Mixing Colors  Pigment  colored material that absorbs and reflects different colors  Primary pigment colors  cyan, magenta, yellow  subtractive colors  combine to form black  EX: color ink cartridges

C. Mixing Colors LightPigment When mixing pigments, the color of the mixture is the color of light that both pigments reflect.