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Definition
| useful in studying surface structures of 3d objects. 2 light sources: mounted above for opaque, below for transparent objects |
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| how a dissecting micro works |
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Definition
| reflected light bounces off the sample, passes through an objective lens, and then through a par of ocular lenses to your eyes. magnification range of 10x-30x |
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Definition
| uses a double lens system. magnifies up to 1000x |
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Definition
| found in eyepiece, usually 10x in power |
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Definition
| mounted on a rotating disk. 4x, 10x, and 40x |
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Definition
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Definition
| house the ocular lenses. 10x |
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Definition
| hollow tube providing the right optical distance between th eocular and objective lenses |
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Definition
| the mount for the objective lenses; revolves to bring the various objective lenses into position for viewing object |
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Definition
| lenses of various sizes and magnification powers. lowest lens has shortest tube, but provides largest viewing diameter |
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Definition
| platform on which the microscope slice is placed under the objective lens |
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Definition
| incorporated into the base of the microscope |
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Definition
| a lens systme used to focus the light beam up into the iris, and the slide |
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Definition
| regulates light intensity. controls amount of light transmitted through the slide |
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Term
| coarse focus adjustment knob |
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Definition
| adjusts the coarse focusing. |
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| fine focus adjustment knob |
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Definition
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Definition
| look into the ocular with the eye that is opposite of writing hand |
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Definition
| first adjust the width of the two eyepieces, until the distance matches your eyes. |
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Definition
| once the proper focus is adjusted for one objective lens, the miage should remain sharp when switching to another objective lens |
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Term
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Definition
1) place 1-2 drops of water on a slide
2) place coverslip over specimen slowly so there are no air bubbles
3) first examine under low power
4) go to a higher power to see specific objects |
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Term
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Definition
| focusing on one part of an object causes the others to go out of focus, the lower the magnification, the greater the depth of field |
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