thethe BIGBIG ideaidea

CHAPTER OUTLINE

NEW CHAPTER

Optical tools depend on the wave behavior of light.

Light and Optics

Mirrors form images by reflecting light.4.14.1

Lenses form images by refracting light.4.24.2

The eye is a natural optical tool.4.34.3

CHAPTER

4.44.4 Optical technology makes use of light waves.

VOCABULARY

KEY CONCEPT CHAPTER HOME

4.14.1

SECTION OUTLINESECTION OUTLINE

Mirrors form images by reflecting light.

image

optics

diffuse reflection

regular reflection

law of reflection

concave

focal point

convex

• Mirrors work by regular reflection and obey the law of reflection.

normal

angle of incidence

angle of reflection

60°60°

VOCABULARY

KEY CONCEPT CHAPTER HOME

4.14.1

SECTION OUTLINESECTION OUTLINE

Mirrors form images by reflecting light.

image

optics

diffuse reflection

regular reflection

law of reflection

concave

focal point

convex

• Mirrors work by regular reflection and obey the law of reflection.

• Flat mirrors form virtual images.

• Curved mirrors form both real and virtual images.

VOCABULARY

KEY CONCEPT CHAPTER HOME

Lenses form images by refracting light.4.24.2

SECTIONOUTLINESECTIONOUTLINE

focal length

lens

focal point

focal length

• Lenses have curved surfaces that refract parallel light waves in different amounts.

VOCABULARY

KEY CONCEPT CHAPTER HOME

Lenses form images by refracting light.4.24.2

SECTIONOUTLINESECTIONOUTLINE

focal length

lens• Lenses have curved surfaces that refract parallel

light waves in different amounts.

• Convex lenses bend light inward toward a focal point.

principal axis

Convex Lens

focal point

VOCABULARY

KEY CONCEPT CHAPTER HOME

Lenses form images by refracting light.4.24.2

SECTIONOUTLINESECTIONOUTLINE

focal length

lens

Concave Lens

• Lenses have curved surfaces that refract parallel light waves in different amounts.

• Convex lenses bend light inward toward a focal point.

• Concave lenses spread light out.

• Lenses form both real and virtual images.

principal axis

Convex Lens

focal point

VOCABULARY

KEY CONCEPT CHAPTER HOME

4.34.3

SECTIONOUTLINESECTIONOUTLINE

The eye is a natural optical tool.

pupil

cornea

retina

The light passes through the iris and the pupil.

2

Light from an object is refracted by the cornea.

1

The lens refracts the light more.

3 optic nerve

irisAn image is focused on the retina.

4

• The eyes of humans and many animals use lenses to focus images on the retina.

• The retina detects images and sends informationabout them to the brain.

VOCABULARY

KEY CONCEPT CHAPTER HOME

4.44.4

SECTIONOUTLINESECTIONOUTLINE

Optical technology makes use of light waves.

fiber optics

laser

• Many optical tools are made by combining mirrors and lenses.

• Examples of optical tools include:telescopes

VOCABULARY

KEY CONCEPT CHAPTER HOME

4.44.4

SECTIONOUTLINESECTIONOUTLINE

Optical technology makes use of light waves.

fiber optics

laser

• Many optical tools are made by combining mirrors and lenses.

• Examples of optical tools include:telescopesmicroscopes

VOCABULARY

KEY CONCEPT CHAPTER HOME

4.44.4

SECTIONOUTLINESECTIONOUTLINE

Optical technology makes use of light waves.

fiber optics

laser

• Many optical tools are made by combining mirrors and lenses.

• Examples of optical tools include:telescopesmicroscopescameras

VOCABULARY

KEY CONCEPT CHAPTER HOME

4.44.4

SECTIONOUTLINESECTIONOUTLINE

Optical technology makes use of light waves.

fiber optics

laser

• Many optical tools are made by combining mirrors and lenses.

• Examples of optical tools include:

• Lasers have a wide variety of uses.

telescopesmicroscopescameraslasers

VOCABULARY

KEY CONCEPT CHAPTER HOME

I. Mirrors form images by reflecting light.

A. Optics is the science of light and vision.

B. Mirrors use regular reflection.

4.14.1

KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY

Mirrors form images by reflecting light.

image

optics

diffuse reflection

regular reflection

law of reflection

concave

focal point

convex

1. Flat Mirrors

C. Shape determines how mirrors form images.

2. Concave and Convex Mirrors

VOCABULARY

KEY CONCEPT CHAPTER HOME

II. Lenses form images by refracting light.

B. Shape determines how lenses form images.

4.24.2

KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY

A. A medium can refract light.

1. Refraction of Light

Lenses form images by refracting light.

2. Refraction and Rainbows

1. Convex and Concave Lenses

2. Images Formed by Lenses

focal length

lens

VOCABULARY

KEY CONCEPT CHAPTER HOME

III. The eye is a natural optical tool.

A. The eye gathers and focuses light.

1. How Light Travels Through the Human Eye

B. Corrective lenses can improve vision.

4.34.3

KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY

The eye is a natural optical tool.

2. How the Eye Forms Images

1. Corrective Lenses

2. Surgery and Contact Lenses

pupil

cornea

retina

VOCABULARY

KEY CONCEPT CHAPTER HOME

III. Optical technology makes use of light waves.

A. Mirrors and lenses can be combined to make more powerful optical tools.

1. Microscopes

B. Lasers use light in new ways.

4.44.4

KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY

Optical technology makes use of light waves.

2. Telescopes

1. Making Laser Light

2. Visual Uses of Lasers

fiber optics

laser

3. Cameras

3. Fiber Optics

4. Future Uses of Lasers