Knowledge, they say, is power. Power to do good or ill, power to create or destroy, power to change the world! All that power, though, cannot defeat even the weakest of the nuclear forces: gravity.
Or can it? Look at this stack of books... How is it staying up? Is it glue? Velcro? Tractor beams? The secret is a simple and clever little device called the Hidden Bookshelf! An L-shaped wedge of metal holds your books up against the wall while a tiny clip holds the inside cover of the book up, giving your larger books the illusion of sticking to the wall as if by magic!
Hidden Bookshelf
