SUPPLEMENTARY MATERIALS 



117 



REFERENCES FOR FURTHER STUDY 

 Texts 



Caklwell and Curtis, Science for Today, Chap. 27 

 Clement, Collister, and Thurston, Our Surroundings, Chap. 

 13 



Courtesy of Baiisch and Lamb Optical Company 



FK;. 183. A SCIENTIST AT THE MICROSCOPE 



Hunter and Whitman, My Own Science Problems, Unit 6; 



Science in Our World of Progress, Unit 6 ; Science in Our 



Social Life, Unit 6 

 Lake, Harley, and Welton, Exploring the World of Science, 



Chap. 21 

 Pieper and Beauchamp, Everyday Problems in Science, Unit 



15 

 Powers, Neuner, and Bruner, Tins C Slanging World, Chap. 



20 (part) ; Man's Control of His Environment, Chap. 30 

 Skilling, Tours through the World of Science, Tour 13 

 Van Buskirk and Smith, The Science of Everyday Life, Chap. 



8 



Watkins and Bedell, General Science for Today, Chap. 22 

 Webb and Beauchamp, Science by Observation and Experi- 

 ment, Unit 1 (part) 

 Wood and Carpenter, Our Environment: How We Use and 



Control It, Unit 2, Topic 8 



Special references 



Eastman Kodak Company, About Lenses 



Eastman Kodak Company, How to Make Good Pictures 



Gray-Lloyd Manufacturing Co., Lens Part of Photography 



WHAT YOU SHOULD AIM TO ACQUIRE FROM 

 THIS STUDY 



1. The work of the lens in optical instruments. 



2. The structure of the eye. 



3. How to care for the eye. 



4. The common eye defects, their causes and reme- 

 dies. 



TEST OF MASTERY OF THE TOPIC 



In your notebook complete the statements, answer the 

 questions, and comply with the instructions. 



1. Make diagrams of concave and convex lenses and 

 show how rays of light are bent in passing through each. 



International News Photos, Inc. 



FIG. 184. THE YERKES TELESCOPE 



2. Name five instruments in which lenses are used. 



3. A concave lens (converges, diverges) light. 



4. The lens in the human eye is a (convex, concave) 

 lens. 



5. The distance from the to the of the lens is 



the focal length of the lens. 



6. A lens is used to correct farsightedness. 



7. A lens is used to correct nearsightedness. 



8. What is the cause of nearsightedness? 



9. What is the cause of farsightedness? 

 10. -What is the cause of astigmatism? 



11. What are the four essential parts of a camera? 



12. Motion pictures are made possible because the 



of the human eye holds an of an object for a short 



time after the light producing the image ceases. This is 

 known as the of vision. 



13. In a camera light enters through the and strikes 



a that has been made light sensitive with a com- 

 pound. 



SUPPLEMENTARY MATERIALS 



Reading suggestions 



Abbot, Everyday Mysteries (Macmillan) 

 Carpenter, How the World Is Housed (American 



Book) 



Forman, Stories of Useful Inventions (Century) 

 Lunt, Everyday Electricity (Macmillan) 



Doubleday, Stories of Inventors (Doubleday) 

 Darrow, The Boys' Own Book of Great Inventions 

 (Macmillan) 



Luckiesh, Seeing and Human Welfare (Williams) 

 Collins, Experimental Optics (Appleton) 

 Bragg, The Universe of Light (Macmillan) 



