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17 Cards in this Set
- Front
- Back
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What is the smallest sized object a human eye can see?
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1/250 of an inch (1/10 mm)
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What are the two different microscopes used in this lab?
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Dissecting and Compound Light
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What is the Dissecting microscope used for?
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Small 3-dimensional items.
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How many eyepiece(s) does the Dissecting microscope have?
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Two.
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What are the eyepieces of a dissecting microscope called?
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Oculars
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What is the magnification of the dissection microscope ocular Lens?
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10x
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Explain three different ways that the light source can be positioned for a dissecting microscope.
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Up from underneath.
From the side. Out of holder, into "arm" (back) aimed down. |
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why would you want to be able to have varied positions for the light source?
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Specimens vary in color/transparency and different angles of light enable different views. If am item is opaque it needs to have light come from the top or side.
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What is the diopter adjustment?
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The knob one eyepiece of a dissecting microscope that allows to customize sight for each individual's eyes.
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What is the magnification range of the objective lens of a dissecting microscope?
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.7x-3x
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What is the total magnification range of a dissecting microscope?
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7x-30x
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What is the formula for total magnification?
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Ocular magnification+ objective magnification.
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What is the orientation of the Dissecting microscope?
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mirror, right= right, towards= towards.
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As magnification of a dissecting microscope increases, what happens to the size of the field of view?
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Field of view decreases as magnification increases.
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What happens to the depth of field as the magnification increases?
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the depth of view decreases (by about half).
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Where did the idea for Velcro come from?
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Burr clover seeds.
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What does Parfocal mean?
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If the lower level is focused, the high level automatically should be.
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