The Light Microscope

Front

What is the function of the diaphragm in a light microscope?

Back

The diaphragm controls the amount of light that enters the stage, allowing for better visibility of the specimen.

Front

What is the role of the body tube in a light microscope?

Back

The body tube allows light to pass upward and through to the eyepiece, connecting the eyepiece to the objective lenses.

Front

Which part of the microscope is known as the scanning objective lens?

Back

The scanning objective lens is typically labeled as #4 on a microscope.

Front

What is the ocular lens in a light microscope?

Back

The ocular lens is the part of the microscope that you look through to view a specimen placed on the stage.

Front

How do you calculate total magnification in a light microscope?

Back

Total magnification is calculated by multiplying the magnification of the objective lens by the magnification of the ocular lens.

Front

If the ocular lens has a magnification of 10x and the objective lens is 50x, what is the total magnification?

Back

Total magnification = 10x (ocular) * 50x (objective) = 500x.

Front

What is the purpose of the coarse adjustment knob?

Back

The coarse adjustment knob is used to bring the specimen into general focus.

Front

What is the purpose of the fine adjustment knob?

Back

The fine adjustment knob is used to sharpen the focus of the specimen after using the coarse adjustment.

Front

What is the light source in a light microscope?

Back

The light source provides illumination to the specimen, allowing it to be seen clearly.

Front

What is the revolving nosepiece in a light microscope?

Back

The revolving nosepiece holds the objective lenses and allows the user to switch between different magnifications.