Post on 15-Dec-2015
Have only 1 lensGive two examples of a simple microscope:
Simple Microscopes
•Magnifying Glass• Reading Glasses
Compound Microscopes
Have more than one ______
lens
Dissecting Microscopes Magnify by 10x or ______ or ________
Shine light on or ____________ the specimen
Specimen can be thick or _______.
20x 30xthrough
thin
Light Microscope Magnify by ______________
Shines light ______________ the specimen
Specimen must be _________.
40- 400x
thin
through
Electron MicroscopeUse a beam of _______________-The specimen must be _________ because an electron microscope is used in a vacuum with no _____ and no ________
electronsdead
airwater
Probe MicroscopesIon Microscopes◦_____________ can be seen with these 2 types of microscopes.
Other Microscopes
Atoms
A. Carry a microscope with ___________ hands – one hand holding the _______
And the other hand under the ___________
Always hold the microscope upright so the _____________ cannot fall out
When you place a microscope at your table, make sure it is _______ from the edge
If there is anything wrong with the microscope, or it is damaged in any way, let the
_______________ know immediately.
B. To clean the objective lenses and eyepiece, use _______________________
Both ArmBase
Eyepiece
Away
Teacher
Lens Tissue
1. Prepare your slide
2. Plug the microscope in. Turn on the ______________
3. Be sure the ___________ Power Objective Lens (_______) is clicked into place.
NOTE: Be sure to look at the microscope from the side when changing objective
lenses to avoid damaging the ________________ and _____________
4. Use coarse focus to raise the stage to its ________________ position
5. Place the _______________ on the stage.
6. Look through the eyepiece and turn the __________________ (lowering the stage)
until the specimen is visible.
7. Use the ____________ adjustment to bring your specimen into sharp focus.
You may wish to move the ________________ to adjust the amount of light.
Light
Low 4X
Slide Lens
Highest
SlideCoarse Focus
Fine
Diaphragm
8. Make sure the specimen is ______________
9. Switch to the ___________ Power Objective Lens ( ______)
NOTE: Look at the microscope from the ____________ when you change lenses.
10. To avoid losing your focus and/or crushing the slide with the lens, never use the
__________________ focus on medium or high power.
Use the _____________ focus only to make the specimen visible.
11. Make sure the specimen is ______________. Look from the _________ as you
change objective lenses and switch to the __________ Power Lens (________)
12. Use only the _____________ focus to make the specimen visible.
13. When finished, make sure the ___________ power objective lens is in place,
wrap the __________ around the _________ of the microscope, cover, and place
in the appropriate location
Focused
Mid 10XSide
Coarse
Fine
Focused SideHigh 40X
FineLow
Cord Arm