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Biology Chapter 1.4
Biology Chapter 1.4 Terms and Definitions
| Term | Definition |
|---|---|
| Compound light microscope | a microscope that uses light to illuminate a specimen that is then magnified by two lenses |
| eyepiece | the part of a compound light microscope that magnifies an image, usually 10x, also called an ocular lens |
| objective lens | the part of a compound light microscope that is located directly above the specimen that magnifies the image of the specimen |
| stage | a platform of a compound light microscope that supports the slide holding the specimen |
| light source | a light bulb that provides light for viewing the image. It can either be reflected by a mirror or can be directly provided by |
| magnification | the increase of an objects apparent size by using lenses or mirrors |
| nosepiece | the part of a compound light microscope that holds the objective lenses in place above the specimen |
| resolution | in microscopes, the ability to form images with fine detail |
| SEM (scanning electron microscope) | a microscope that produces an enlarged, three dimensional image of an object by using a beam of electrons rather than light. |
| TEM (transmission electron microscope) | a microscope that transmits a beam of electrons through a very thin slice of specimen and can magnify up to 200,000x |
| metric unit | a decimal based standard, system of measurement that is used by scientists; similar to the Systeme Internationale |
| base unit | one of the fundamental units of measurement that describes length, mass, time, and other quantities and from which other units are derived. |
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