1. Microscope
Basics
T. Trimpe

2. Ocular lens (Eyepiece)
Body Tube
Nosepiece
Arm
Objectives
Stage
Stage Clips
Coarse Adjustment
Diaphragm
Fine Adjustment
Light
Always carry a microscope with one hand holding the arm and one hand under the base.
Base

3. Fill in the table on your worksheet.
What’s my power?
Microscopes use two lenses to magnify an image. To determine how much larger an image appears in the microscope than it is in real life, you must multiply the power of the two lenses together. This is called determining the power of magnification.
What are the powers of magnification for each of the objectives on your microscope?
Fill in the table on your worksheet.

4. Which of these images isviewed at a higher power of magnification?
Low vs. High Power
Low power is good for seeing the big picture. However, you may not be able to see many details.
High power is good for seeing details. However, you are always missing some of the image because you are so far zoomed in.
Which of these images isviewed at a higher power of magnification?

5. FINAL WARNING
Be careful on HIGH POWER!!!! Since high power is longer than the other objects, sometimes it is too close and may touch the slide. If you use the course adjustment (large knob) on high power to focus, you may damage your microscope. NEVER USE THE COARSE ADJUSTMENT WHEN VIEWING ON HIGH POWER!

6. Place your cover slip on as indicated below to avoid bubbles.
Wet Mount Slide Tip
Place your cover slip on as indicated below to avoid bubbles.
Cover Slip
Lower slowly