Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.8
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2443
Points per Word
0.000205
Page Count
32
Points per Page
0.015625
Description
This book explains the principles of light, lenses, and other key science ideas behind the technology of telescopes, binoculars, and microscopes, discussing the history of the inventions, their uses, and how to select one for purchase.