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24 Cards in this Set
- Front
- Back
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Which of the following statements about resolution is true? |
refers to the ability of a lens to distinguish adjacent objects |
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Which of the following statements regarding resolving power is true? |
the smaller the wave length, the greater the resolving power of the lens |
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When light passes through an object, ____ of the light has occured |
transmission |
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When light bends as is passes through an object _____, of the light has occured |
refraction |
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In order to make use of light for microscopic examination of an object, the object must _____ or ______ light |
transmit, reflect |
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During microscopic observation of a specimens, the amount of light that reaches and is allowed to pass through the specimen is controlled by the ______ |
Iris diaphragm |
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Most light microscopes contain a _______ that converges the light beam so that is passes through the specimen |
condenser |
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the total magnification of a specimen being viewed with a 10x ocular lends and a 40x objective lens is... |
400x |
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Ultraviolet light is a key component of |
fluorescent microscopy |
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The advent of the electron microscope allowed ____ to be viewed for the first time |
viruses |
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Electron microscopes use ______ to focus the electron beam |
electromagnets |
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the term basic dyes refers to the fact that these dyes |
are positively charged |
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a simple stain |
uses only a single dye |
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in a gram stain, the mordant is |
iodine |
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the stains used in the ziehl nelson acid fast stain are |
carbol fuschion and metylene blue |
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the counter stain in a spore stain is |
safranin |
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wave length |
the length of a light ray |
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resolution |
ability to see two objects as separate and distinct units rather than a fuzzily overlapped image |
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relfection |
bouncing of light off an object |
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transmission |
passage of light through an object |
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absorption |
light that is being taken up by an object neither passes through nor does it bounce off |
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refraction |
bending of light as is passes from medium to another of a different density |
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index of refraction |
the degree of deviation or bending |
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bright field microscope |
*compound light microscope *binocular *has parafocalization |
