This document provides instructions for a pre-lab on reflected light microscopy. It asks students to describe properties like color and reflectivity that are observed using a reflecting microscope. It also asks students to compare transmitted and reflected light microscopy. Finally, it provides a list of parts for a microscope and asks students to label and identify the functions of each part in a sketch.
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Pre lab - reflected light microscopy - geol 194
1. Pre-Lab of Reflected Light Microscopy
A. Describe each of the following properties below AND determine how they are observed in a
reflecting microscope (10 pts each)
1) Color
2) Reflectivity/Reflectance
3) Hardness
4) Cleavage
5) Bireflectance
6) Anisotropism
7) Internal Reflections
• Incomplete answers get an automatic 0
B. Compare and contrast reflected light and transmitted light microscopy (10 pts)
C. Draw a sketch of one of the new microscopes in the laboratory (Rm 115). Label the following parts
and identify its function or use.
1) Light source
2) Filter
3) Aperture control
4) Field of view control
5) Oculars
6) Analyzer
7) Polarizer
8) Rotating nosepiece
9) Objectives
10) Stage
11) Stage lock
2. 12) Stage centering screw
13) Stage adjustment knob
14) Fine-adjustment knob
15) Coarse-adjustment knob
16) On/Off switch
17) Base
18) Body
19) Vernier scale
Reminders
• No sketch yields a maximum grade of 30/100 pts