The microscope has evolved a lot from the time of Leeuwenhoek. This presentation gives a brief overview about the types of microscope their principle of function and application.
Contemporary philippine arts from the regions_PPT_Module_12 [Autosaved] (1).pptx
Microscopy
1. My work, which I've done for a long time, was not pursued in order to gain the praise I now enjoy, but chiefly from a craving after knowledge, which I notice resides in me more than in most other men. And therewithal, whenever I found out anything remarkable, I have thought it my duty to put down my discovery on paper, so that all ingenious people might be informed thereof. Antony van Leeuwenhoek. Letter of June 12, 1716
26. Multiple step operation employed to attain optimal illumination: 1. Remove any diffusing filter. 2. Put a slide on the stage and focus. 3. Completely close the field diaphragm . 4. Move the condenser until the border or the iris hexagon is neat and clear. 5. Center if necessary. 6. Open the field diaphragm until the tip of the hexagon touches the field limit KOHLER’S ILLUMINATION