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

A split-field photo of two bullets through the lens of firearm examiner Michael Haag's comparison microscope. After looking at the marks on the bullets, including the scratch-like lines, or ...

But a match is only confirmed when examiners compare casings using a comparison microscope — an important distinction when thinking about admissible evidence in court cases. ...

This article was originally published with the title “ A Comparison Microscope, The Mono-rail Sled, and more ” in Scientific American Magazine Vol. 108 No. 7 (February 1913), p. 158 doi:10. ...

Historically, microscopes have been crucial in shaping early STEM education, offering students a window into the microbial world. Many K-12 classrooms, however, rely on legacy optical microscopes ...