Introduction to Microscopes

Caroline DeVanGary Larson

Early Microscopes

http://www.answers.com/topic/anton-van-leeuwenhoek

http://www.superstock.com/stock-photos-images/1895-11795

What are the objects shown in the following images?

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

EARWAX on COTTON SWAB

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

GUITAR STRING

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

MASCARA BRUSH

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

PLAQUE on DENTAL FLOSS

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

SALT & PEPPER

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

SUGAR CRYSTALS

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

TOILET PAPER

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http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

TOOTHBRUSH BRISTLES

http://www.theblogismine.com/2011/01/14/breathtaking-microscopic-images-of-everyday-objects/

Body Tube

Nosepiece

Objectives

Stage Clips

Light

Ocular lens(Eyepiece)

Arm

Stage

Coarse Adjustment

Fine Adjustment

Always carry a microscope with one hand holding the arm and one hand under the base.

Base

Diaphragm

http://sciencespot.net/Pages/classbio.html

What’s my power?To calculate the power of magnification, multiply the power of the ocular lens by the power of the objective.

What are the powers of magnification for each of

the objectives we have on our microscopes?

Fill in the table on your worksheet.

http://sciencespot.net/Pages/classbio.html

Comparing Powers of Magnification

We can see better details with higher the powers of magnification, but we cannot see as much of the image.

Which of these images would be viewed at a higher power of

magnification?

http://sciencespot.net/Pages/classbio.html

1

5

3

6

68

9

10

11

7

4

2