Question

b. low-power objective: this lens is longer than the scanning objective lens and is used to view objects in greater detail. what is the magnifying power of the low-power objective lens on your microscope? ______
c. high-power objective: if your microscope has three objective lenses, this lens will be the longest. it is used to view an object in even greater detail. what is the magnifying power of the high-power objective lens on your microscope? ______
d. oil immersion objective (on microscopes with four objective lenses): holds a 95× (to 100×) lens and is used in conjunction with immersion oil to view objects with the greatest magnification. does your microscope have an oil immersion objective? ______ if this lens is available, your instructor will discuss its use when the lens is needed.

1. stage: platform that holds and supports microscope slides. a mechanical stage is a movable stage that aids in the accurate positioning of the slide. does your microscope have a mechanical stage? ______

a. stage clips: clips that hold a slide in place on the stage.
b. mechanical stage control knobs: two knobs that control forward/reverse movement and right/left movement, respectively.

1. coarse-adjustment knob: knob used to bring object into approximate focus; used only with low-power objective.
2. fine-adjustment knob: knob used to bring object into final focus.
3. condenser: lens system below the stage used to focus the beam of light on the object being viewed.

a. diaphragm or diaphragm control lever: lever that controls the amount of light passing through the condenser.

1. light source: an attached lamp that directs a beam of light up through the object.
2. base: the flat surface of the microscope that rests on the table.

rules for microscope use
observe the following rules for using a microscope:

1. the lowest power objective (scanning or low) should be in position at both the beginning and the end of microscope use.
2. use only lens paper for cleaning lenses.
3. do not tilt the microscope because the eyepieces could fall out, or wet mounts could be ruined.
4. keep the stage clean and dry to prevent rust and corrosion.
5. do not remove parts of the microscope.
6. keep the microscope dust-free by covering it after use.
7. report any malfunctions.

focusing the compound light microscope—lowest power

1. turn the nosepiece so that the lowest power objective on your microscope is in straight alignment over the stage.
2. always begin focusing with the lowest power objective on your microscope (4× scanning or 10× low power).
3. with the coarse-adjustment knob, lower the stage (or raise the objectives) until it stops.

Explanation:

The text provided is a set of instructions and information about the parts of a compound light microscope and the rules for using it, as well as the procedure for focusing it at the lowest power. It doesn't contain a specific question that needs to be answered. If you have a question related to this microscope information, such as asking about the function of a specific part, or how to calculate the total magnification (e.g., if the eyepiece magnification is known and the objective magnification is given), or something else, please clarify and I'll be able to assist you.

Answer:

The text provided is a set of instructions and information about the parts of a compound light microscope and the rules for using it, as well as the procedure for focusing it at the lowest power. It doesn't contain a specific question that needs to be answered. If you have a question related to this microscope information, such as asking about the function of a specific part, or how to calculate the total magnification (e.g., if the eyepiece magnification is known and the objective magnification is given), or something else, please clarify and I'll be able to assist you.