Chapter 1.2 Flashcards
How do you carry the microscope?
Hold arm of microscope with one hand and place other under the base.
How do you put down the microscope?
Arm facing you, ten cm away from edge.
With what do you clean the microscope?
Lens paper, don’t touch lens with hand or normal paper.
How do you determine the light source of a microscope?
If lamp, plug in electrical socket.
If mirror, adjust so light reflects through diaphragm. (Don’t use direct sunlight)
How do you make the lens click into place?
Turn revolving nosepiece until the low power objective lens is in line with body tube and diaphragm.
How do you adjust the height of the specimen?
Adjustment knob to lower lens, stop lens just above. (Watch from side)
How do you get the specimen into focus?
Look through eyepiece, slowly raise objective lens with coarse adjustment knob. When specimen nearly in view, turn fine adjustment knob to focus on specimen, higher magnification, repeat steps 7 and 8
How do you focus on the specimen?
While watching from the side, and not through the eye piece,use the coarse adjustment knob to lower the objective lens towards the slide. Stop the objective lens just above, but not touching, the slide. Touching the slide with the objective lens may damage the lens, the slide or both.
8. While looking through the eyepiece lens, slowly raise the objective lens with the coarse adjustment knob. When the specimen comes nearly into view, turn the fine adjustment knob to focus exactly on the specimen. To magnify the specimen even more you can use a higher power objective lenses by following the same procedure.
If you cannot find the specimen, repeat steps 7 and 8.
Why keep both eyes open when viewing a specimen?
Reduces eye strain, enables to draw observations.
What do you do when done with microscopes?
Click nosepiece to lowest power objective. Cover with plastic cover or put back in protective cage.
Eye?
Detect stimulus of light so sight.
Nose?
Stimulus of chemicals so smell
Skin?
Stimulus of temp and touch so feeling.
Ear?
Stimulus of sound so hear
Tongue?
Stimulus of chemicals so taste.
