https://tube.cosmicflow.space/videos/watch/24fa5bbb-5dc8-49e0-95d6-cd82f3c9a92d Learn more: https://www.ibiology.org/talks/koehler-illumination/ This lecture covers the lenses of the microscope and how they are used to focus light onto a specimen and how light from the specimen is focused onto a camera or the retina of an eye. Koehler illumination, which provides even illumination of a sample, is described. Tue, 02 Jun 2026 22:18:26 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.cosmicflow.space https://tube.cosmicflow.space/lazy-static/avatars/8891227d-e60f-40aa-88be-4c856c6a73dc.png https://tube.cosmicflow.space/videos/watch/24fa5bbb-5dc8-49e0-95d6-cd82f3c9a92d All rights reserved, unless otherwise specified in the terms specified at https://tube.cosmicflow.space/about and potential licenses granted by each content's rightholder.