Warm-up Sept 8th

• Can you identify the picture you received when you entered the room? Give it a try!!

1. Body tube – holds nosepiece at one end and eyepiece at the other end; conducts light rays

2. Revolving nosepiece – holds objectives

3. Scanning power objective – shortest lens used to scan whole slide

4. Low-power objective – longer than scanning lens and used to see more detail

5. High-power objective – longest lens used to see great detail

6. Stage clips – holds slides in place on stage

7. Diaphragm – controls amount of illumination used to view the object

8. Light source – bulb or mirror

9. Ocular lens (eyepiece) what you look through

10. Arm – supports upper parts and provides a carrying handle

11. Stage – holds and supports microscope slides

12. Coarse adjustment knob – used to bring object into approximate focus

13.Fine-adjustment knob – used to bring object into final focus

14. Base – flat surface that rests on the table

Microscope RulesMicroscope Rules1.1. Always carry the microscope with 2 hands.Always carry the microscope with 2 hands.

2. Focus down very slowly when using 2. Focus down very slowly when using high high power!power!

3. Don’t let the 3. Don’t let the stagestage get wet! get wet!

4. Look at the whole area under the coverslip.4. Look at the whole area under the coverslip.

5. Use only 5. Use only lens paperlens paper to clean the lenses. to clean the lenses.

6. Keep the microscope about 2 inches from the 6. Keep the microscope about 2 inches from the edge of the desk.edge of the desk.

7. Make sure 7. Make sure scanner powerscanner power faces down when faces down when finished using the microscope.finished using the microscope.

Total Magnification -Total Magnification - How many times bigger an How many times bigger an object appears than it’s actual object appears than it’s actual sizesize..

T.M. = POWER OF EYEPIECET.M. = POWER OF EYEPIECE X POWER OF X POWER OF

OBJECTIVEOBJECTIVESCANNERSCANNER POWER POWER = 10 X 4 == 10 X 4 =

40 X40 X

LOW LOW POWER = 10 X 10 =POWER = 10 X 10 =

100X100X

HIGHHIGH POWER = 10 X 40 = POWER = 10 X 40 =

400X400X

OIL IMMERSIONOIL IMMERSION = 10 X 100 == 10 X 100 = 1OOOX1OOOX