Leave it to the great minds at MIT and Georgia Tech to figure out a way to read the pages of a book without actually opening it. A team of researchers from the two institutions pulled it off with a system they developed that looks like a cross between a camera and a microscope. They said it could someday be used by museums to scan the contents of old books too fragile to handle or to examine paintings to confirm their authenticity or understand the artist's creative process. Writing in the latest issue of the journal Nature Communications, the scientists explained how they used terahertz waves -- a type of radiation situated on the electromagnetic spectrum between microwaves and infrared light -- to read a stack of papers with a single letter handwritten on each page. The device, called a terahertz spectrometer, managed to clearly read only nine pages, though it could see writing on up to 20. "We were very excited because we didn't think we would be able to see as deep as we did," said Barmak Heshmat, a research scientist at the MIT Media Lab.

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.