setting up koehler alignment in a microscope

Understanding Koehler Alignment Before we understand Koehler alignment – the main topic of this article – let’s go into a bit of the history behind its conception.  Koehler alignment was invented by August Koehler, a 19th-20th-century German scientist. His publication, “A New System of Illumination for Photomicrographic Purposes,” was a revolutionary foray into solving problems that plagued […]