As mentioned in class, there will be a question on the exam on microscopy. Please go through the following tutorial. It is fun and will teach you what you need to know. By the end you should be able to determine or calculate:

http://virtualurchin.stanford.edu/microscope.htm

1. Magnification used. As the tutorial mentions, there are three objective lenses, 4x 10x and 40x

2. Field diameter. The tutorial will teach you how to determine the diameter of the field of view.

3. Actual size. The tutorial will show you how to determine the actual size of the specimen being examined.

4. Drawing magnification: There is a 10x len in the ocular. So combined with the 4x lens, the drawing magnification is 40x. When you are using 10x, the drawing magnification is 10x10=100x. When using the 40x, the drawing magnification is 40x10=400x.

http://virtualurchin.stanford.edu/microscope.htm

1. Magnification used. As the tutorial mentions, there are three objective lenses, 4x 10x and 40x

2. Field diameter. The tutorial will teach you how to determine the diameter of the field of view.

3. Actual size. The tutorial will show you how to determine the actual size of the specimen being examined.

4. Drawing magnification: There is a 10x len in the ocular. So combined with the 4x lens, the drawing magnification is 40x. When you are using 10x, the drawing magnification is 10x10=100x. When using the 40x, the drawing magnification is 40x10=400x.