Question
please help I'm having trouble with this chapter
Activity 5: Caring for the Microscope I. True/False: If the statement is false, correct it so that it is true. a. Begin the focusing process with the high-power objective. b. Store the microscope with the oil-immersion objective in position c. Use tissue paper and water to clean the ocular and objective lenses d. The coarse adjustment knob can be used with any objective lens. 2. Why is it important to allow the microscope to cool before putting it away? PART II. Putting It All Together A. Review Questions Answer the following questions using your lecture notes, your textbook, and/or your lab notes. 1. How does a microscope's iris diaphragm lever work like the iris of an eye? 2. For each of the following parameters, indicate whether it increases or decreases as you move from lower magnification to higher magnification a. field diameter b. working distance c. amount of light required d. resolution 3. Assume that you are using the low-power objective and an object takes up a quarter of the field of view. Estimate the diameter of the object in gum. 4. A student is using the high-power objective. His lab partner notices that the working distance is approximately 1 cm. Is the student observing the specimen? Explain. 5. Indicate a possible solution for each of the following complaints during microscopeu a. There is not enough light to view a specimen. b. I can't find the specimen on the slide. c. I see a dark crescent-shaped structure. UNIT 4 I The Micro
Explanation / Answer
1)
a - True
b - False ,lowest power objectve
c - False , grit free lens paper should be used
d - True
2) Allowing the Blub to cool extends the life of Bulb in a microscope.
Part 11
1- The condensor of a microsope has a shutter like structure called the iris which is used to regulate the amount of light entering into the lens system.
2 -
1-Field diameter incereases.
2-working distance increases.
3- light intensity increases.
4-resolution decreases.
