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What is a. Laser?. LASER ?. TABLE OF CONTENTS. What “Laser” Stands for Acronym Definition of Laser Some Uses for Lasers Medical Organizational Chart Military Commercial . Georgia Performance Objectives. Fourth Grade Science current QCC Standards Inquiry 2

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What is a

Laser?

LASER ?


Table of contents
TABLE OF CONTENTS

  • What “Laser” Stands for

    • Acronym

  • Definition of Laser

  • Some Uses for Lasers

    • Medical

      • Organizational Chart

    • Military

    • Commercial


Georgia performance objectives
Georgia Performance Objectives

  • Fourth Grade Science current QCC Standards

  • Inquiry

  • 2

  • Topic: Reference SkillsStandard: Uses encyclopedias, science reference magazines, books and other media to obtain information related to science concepts.

  • Physical Science

  • 22

  • Topic: Energy and Its Transformations: Light and ColorStandard: Describes the technological procedures/devices that use light. Selects a topic and uses a variety of media resources to investigate selected topics (laser, optical fiber technology, or infrared devices)


MPLIFICATIONBY

IGHT

L A S E R

TIMULATED

MISSION OF

ADIATION


Definition of laser
Definition of Laser

  • A device that produces a focused beam of light at a defined wavelength that can vaporize tissue.


Uses for lasers
Uses for Lasers

  • Medical

  • Military

  • Commercial


Medical uses
Medical Uses

  • In surgery, lasers can be used to operate on small areas without damaging delicate surrounding tissue.



Military uses
Military Uses

  • The Saber 203 briefly

  • illuminates an

  • opponent with harmless,

  • low-power laser light which

  • temporarily makes the enemy

  • unable to fight.

  • Artillery

  • Missiles

  • Radar


Commercial uses
Commercial Uses

More Information and uses


Questions activities
Questions/Activities

  • 1. What does the acronym laser stand for?

  • 2. Who invented the laser?

  • 3. What happens to light to make it become a laser?

  • 4. What are some real world uses of lasers?

  • 5. What is your favorite fact about lasers?

  • 6. If you wee to design a laser, what would you use it for? Describe what it would look like, how heavy it would be, how you would market/sell your product.

  • 7. Which web site was your favorite? Why?

  • 8. Do you think the laser is an important invention? Why or why not?

  • 9. Draw a diagram of a laser based on the drawings and information on holoworld.com

  • 10.After discussing the questions and the answers given, the students will give a ½ page summary on what they learned. The teacher will have the students play bingo based on the facts that they learned in the lesson.


Helpful resources
Helpful Resources

  • Title: Schawlow and Townes Invent the LaserURL:http://www.bell-labs.com/history/laser/Annotation: A history page from Bell Laboratories

  • Title: What Is a Laser?URL:http://www.bell-labs.com/history/laser/laser_def.htmlAnnotation: From the Bell Laboratories where the idea for the Laser began, this page provides history and an overview.

  • Title: StructureURL:http://www.chem4kids.com/files/atom_structure.htmlAnnotation: A good site for background in the structure of the atom.

  • Title: HoloworldURL:http://www.holoworld.com/holo/kids.htmlAnnotation: You can find a good illustration on this page.

  • Title: What's Cool About LasersURL:http://www.opticalres.com/kidoptx_f.html#LasersAnnotation: Find out more about lasers at this Web site.

  • Title:URL:http://www.thetech.org/exhibits/online/lasers/overview.htmlAnnotation: An excellent overview of the Laser with a note on light and history. Applications of Laser technology are also included.

  • Title: Laser Facts Tracker

  • URL:attach What is a Laser Facts Tracker.doc

  • Annotation: Internet research form with room for students’ responses


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