How to use an upright biological microscope

The method of using an upright biological microscope is as follows:

1. Turn on the power, then turn on the lights of the microscope, and slowly adjust the focus from the low-power lens to the high-power lens until the field of view is clear.
2. When observing the mounted film with a microscope, first observe with a low-magnification lens, and then use a high-magnification lens. After switching to a high-power lens, the field of view will become darker. At this time, you can use a large aperture or use a concave reflector to increase the brightness of your field of view.
3. If the structure is observed to be blurry, it may be because the aperture is not adjusted properly or the reflector concave and convex is not adjusted properly. When the observed object image is blurry, you can turn the fine focusing screw. The function of the fine focus spiral is to create a clear object image