Genius optical inventions
from the X-ray to the telescope
Before magnifying glasses, how did people make objects look larger? The ancient Romans filled glass bowls with water. Then microscopes and telescopes came along. But optical innovation didn't stop there. Learn how many lightbulb designs Thomas Edison tested, how spies used microfilm to carry secret messages, how satellites let us look at Earth from space, and more! Follow the trail of inventions and devices that have enabled us to see everything from distant stars to tiny cells.
9781512432084
book
Lexile:
980
