Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.2
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
6636
Points per Word
0.000151
Page Count
40
Points per Page
0.025
Series
Routes of Science
Description
This book describes discoveries about the properties of light throughout history, from Euclid's studies of reflection and refraction in ancient Greece to the invention of lasers by American physicist Charles Hard Townes in the 1960s.