Books by Tracey Hecht. The Ominous Eye: The Nocturnals, Book 2. Written by Tracey Hecht with illustrations by Kate Liebman - Magic, Children's 7 - 11, Fantasy, Fiction, Friendship, Humor, Youth Fiction. When a violent jolt fractures the earth, the Nocturnal Brigade sets out to investigate its source.
Isaac Newton laid the blueprints for his three laws of motion, still recited by physics students, in 1666. Credit: Library of Congress Isaac Netwon is synonymous with apples and gravity.
One of the earliest formal explorations of color theory came from an unlikely source â the German poet, artist, and politician Johann Wolfgang von Goethe, who in 1810 published Theory of Colors (public library; public domain), his treatise on the nature, function, and psychology of colors.