- always start on ___ power
low
- center your slide over the
three word answer
the light aperture
(opening)
- turn the ______ adjustment knob as far as it can go
coarse
so that the _____ and the _____ are as close as they can go
lens, slide
- look through the
ocular
as you use the ______ adjustment knob
coarse
until you find the
image.
- focus using the ____ adjustment knob
fine
- move to ______ power – DO NOT
medium, TOUCH ANYTHING ELSE!
- focus again on using the ____ adjustment knob
fine
- move to ____ power – DO NOT
high, TOUCH ANYTHING ELSE!
- DO NOT use the ______ adjustment knob for ANY reason!
coarse
- focus again using the ____ adjustment knob
fine
- adjust the _____ if necessary
light
- if you cannot find the sample, go to ___ power and start again
low
how do you calculate the power of magnification?
multiply the power of the ocular lens by the power of the objective
what do u hold when carrying a microscope?
arm & base
what 2 structures of microscope will be used to focus on specimen?
coarse and fine adjustment knobs
why should u never use the coarse adjustment knob on high power?
bc it will crack ur slide
when do u use the fine adjustment knob?
when using the high power objective
what are the three objectives’ powers on a microscope?
4x, 10x, and 40x
what is the magnification of the ocular lense?
10x
what is the shortest objective called?
scanning-power objective lens
how do u switch objectives?
by rotating the nosepiece
