EHS 1-2
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29 terms
Terms | Definitions |
|---|---|
 Arm | Supports the body tube |
| Coarse Adjustment Knob | Brings object into rapid but fuzzy focus; only used with low power objective |
| Fine Adjustment Knob | Brings object into sharp focus |
| Diaphragm | Regulates the amount of light entering the microscope |
| Iris | Type of diaphragm that is a lever |
| Disc | Type of diaphragm that is a wheel with predetermined settings |
| Body Tube | Provides the proper distance between the top and lower lenses |
| High Power Objective | Used to view the most detail and smallest field of view |
| Medium Power Objective | Usually contains a 10x lens; mostly used as a focusing point |
| Low Power Objective | Also called the "scanning" objective because it is used to scan the slide to locate an object for viewing |
| Base | Supports the microscope |
| Lamp | Provides transmitted light to form the image |
| Ocular | The top lens, closest to the eye; usually contains a 10X lens |
| Nosepiece | Holds the objectives and rotates to allow interchange of objectives |
| Stage | Support the object to be viewed |
| Stage clips | Holds the slide in place |
| Wet Mount | Temporary slide involving the use of a liquid, usually water |
| Prepared slides | Permenant slides that allow for repeated observations |
| Cross section | A section of an organism made perpendicular to the longest axis |
| Longitudinal section | A section of an organism made parallel to the longest axis |
| Whole mount | A prepared slide that places the whole organism on the slide for viewing, must be thin enough for light to be transmitted through it |
| Magnification | The ability of a microscope to increase the apparent size of an image of an object |
| Resolution | The ability of a microscope to show a clear image and to show detail |
| Compound Light Microscope | Uses transmitted light and 2 lenses to produce an image |
| Electron Microscope | Uses a beam of electrons to produce an image |
| Dissecting Microscope | Uses incident light and 2 oculars to produce an image |
| Total Magnification | Ocular lens multiplied by objective lens |
| Labels for CLM | Type of microscope, what it is, total magnification, type of slide |
| Labels for DM | Type of microscope, what it is, total magnification |
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