A split-field photo of cartridge casings through the lens of firearm examiner Michael Haag’s comparison microscope. Haag said he determined the casing on the left, recovered as evidence of a crime, ...

See what germs and toothpaste really look like under a microscope in this fascinating close-up comparison.#Microscope ...

Designer and developer Lukas Mathis put the new iPad’s Retina Display under the microscope to see just how good the display’s pixel density really is, and how it compares to several popular — and ...