D.marshall Bio1a Microscope Lab

HMS Lab: Microscope Name: Date: 1.

2. 3.

A higher power objective lens has greater magnification than a lower power objective lens. In what other way does the low-power objective lens differ from the high-power objective lens? High powered allows you to "zoom in" closer and see more detail, and a low power allows a larger field of view with less detail. What is the total magnification of a specimen when being viewed with an objective lens with a magnification of 45x? 2025x What is the magnification of the eyepiece? Calculating total magnification is pretty simple. Take the magnification of the eyepiece and multiply by the magnification of the objective.

4. 5. 6.

7. 8. 9.

Describe the position of the letter e when you placed it under the microscope. Its inverted What happens to the field of view when you go from using a low-power objective lens to a high-power objective lens? It gets closer What happens to the brightness when the magnification is changed from low power to high power? The field of view is inversely related to the magnification power...the greater the magnification, the smaller the field of view What happened to the letter e as you moved the slide to the left? It moves to the right What happened to the letter e as you moved the slide forward? It goes down What is the limit of resolution? the capacity of an optical system to resolve point objects as separate images.

10. Why do compound light microscopes have a limit of resolution? because, light has a larger wavelength than electrons, this is why electrons have a higher viewing resolution, because electron wavelength is smaller 11. Describe how the cheek cells looked under the microscope. It should look like a typical animal cell

Saving and Submitting Assignments Be sure to save this file as a file type *.rtf. If your teacher requires students to submit the assignments via email, please be sure to include your user name before the assignment name when saving. Example: dsmith_bio1a_microscope_lab.rtf When you have completed this assignment, you must submit it to your teacher in one of the following ways: •

•

Via email if previously instructed to do so by your teacher Following the instructions outlined in the "Saving and Sending Assignments" document found in the "Course Documents" section