Most ways of collecting images are based on the contact of light with materials. Film cameras catch images on light sensitive film that is developed into pictures using special processes. Digital ...

All matter is made of very small units called atoms. Atoms are so small they cannot be seen using a regular microscope. Scientists have discovered a way to “see” atoms using a special instrument ...

We read all day so you don't have to. Sign up for CNN Business' newsletter for the top stories you need to know.