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It regulates the amount of light that passes through a specimen.
Diaphragm control lever
you can control it to adjust the amount of light
Too much light overwhelms the eye's ability to distinguish contrast and therefore detail in the specimen. Microscopes therefore have the ability to reduce the amount of light impinging on the specimen using a diaphragm, rather like the iris of the eye does.
Iris diaphragm
The diaphram Is What Controls How Much Light Is Released.
It regulates the amount of light that passes through a specimen.
The adjustable stage opening on a microscope is used to control the amount of light illuminating the specimen.
The adjustable stage opening on a microscope is used to control the amount of light illuminating the specimen.
Adjusting the diaphragm of a microscope allows you to be able to control the amount of light that will pass through the specimen you're examining. It allows you too gain a better view of the specimen you're examining.
The part of the microscope is called the Condenser
if you are reffering to field of view, its not exactly the amount of specimen, its mainly used to determine how large a specimen is
The amount of light that is directed from the bottom of an optical microscope through a specimen can be increased by using a stronger bulb or light source. A potentiometer can be used to dim or increase the strength of the light source.
Field of view
The iris diaphragm controls the amount of light passing through the slide or specimen, while the substage condenser focuses a cone of light on the slice or specimen.
The diaphragm of a microscope is used to control the amount of light passing through the specimen. By adjusting the diaphragm, you can regulate the brightness and contrast of the image, helping to improve visibility and clarity.
The mirror, which can also be called the light source. It reflects the light.