Judging a book through its cover: Radical new imaging technique lets you read unopened novels

Being able to read the pages in a book without even opening it might seem like something out of science fiction. But the ability is becoming a reality thanks to new technology. Researchers have designed an imaging system that uses terahertz radiation to read closed books. Being able to read the pages in a book without even opening it might seem like something out of fiction. But the ability is becoming a reality thanks to new technology.