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, ...

- KATE optical system, ultra depth of focus. - 3D solid observation. - CLS for ballet cylindrical flatten and compare. - Professional fixture and disc workbench with 0.1mm move scale ...

My new microscope arrived and here’s the shoot-out between the tablets. Clearly the Retina wins and then the Kindle Fire HD takes second place, followed by the Mini, Nexus 7, and Galaxy Tab 7 Plus, in ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...