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.
When Albert Einstein was formulating his ground-breaking theory of gravity in the early 20th Century, at a time when astronomers only really knew of the existence of our own galaxy, he necessarily used the simplifying assumption that the universe has the same gross properties in all parts, and that it looks roughly the same in every direction ...