Master this deck with 19 terms through effective study methods.
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Transparent, non-absorbing (colorless) materials.
Specimens appear bright against a completely black background.
By blocking undeviated rays from the condenser.
They are refracted, reflected, and scattered into the objective lens.
Completely black background.
Aquatic organisms, diatoms, yeast, small insects, fibers, crystals, tissue culture, and dust specimens.
Using thin specimens to avoid light scattering that degrades the image.
Dedicated darkfield objectives designed for high magnification work.
Paraboloid and cardioid condensers.
A variation of darkfield microscopy that uses transparent colored filters to contrast specimen and background colors.
To determine the value of each reticle unit for accurate measurements.
Total distance divided by the total number of reticle units within that distance.
1000µm.
Only a fraction of the light is used, so high intensity is important.
It serves as both the condenser and the objective.
Darkfield objectives that can also be used as brightfield objectives.
They can interfere with the image quality.
To allow maximum light to enter for better visibility.
They help achieve higher magnification and reduce chromatic aberration.