1 / 12


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

Download Presentation


An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.


Presentation Transcript

  1. What is a Laser? LASER ?

  2. TABLE OF CONTENTS • What “Laser” Stands for • Acronym • Definition of Laser • Some Uses for Lasers • Medical • Organizational Chart • Military • Commercial

  3. 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)


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

  6. Uses for Lasers • Medical • Military • Commercial

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

  8. Medical Uses

  9. 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

  10. Commercial Uses More Information and uses

  11. 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.

  12. 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

More Related