Transcript FORESTRY REVIEW

Microscope Parts
& Usage
Contains the magnifying
lens you look through.
EYEPIECE
Which objective lens
would you use for first
focusing the object?
SCANNING
Scientist known for
contributing to the third
part of the ‘Cell Theory’
which states that all cells
come from other cells.
VIRCHOW
Maintains the proper
distance between the
eyepiece and the
objective lenses.
BODY TUBE
(BARREL)
Which adjustment knob
should be used on
scanning power?
COARSE ADJUSTMENT
KNOB
Scientist who observed
“animalcules”, also
known as bacteria and
protozoan.
Van LEEUWENHOEK
Supports the body tube
and stage; used to carry
the microscope.
ARM
Statements about cells that
apply to all living things
developed with use of the
microscope.
CELL THEORY
Which adjustment knob
should be used while on
high power?
FINE ADJUSTMENT
KNOB
Scientist who observed
the first cells and came up
with the word ‘cells’.
HOOKE
Located on the stage,
holds the slide in place.
STAGE CLIPS
(SLIDE CLIPS)
The name for a
microscope with one
ocular lens (eyepiece).
MONOCULAR
Scientist who studied
plant cells and helped
contribute to the
‘Cell Theory’.
SCHLEIDEN
Moves the stage up and
down for focusing an
image; used first when
focusing the specimen.
COARSE ADJUSTMENT
KNOB
Term used to describe a
microscope with two sets
of magnifying lenses.
COMPOUND
Moves the stage slightly
to sharpen the focus of
the image; used only with
the higher power
objective lenses.
FINE ADJUSTMENT
KNOB
Scientist who studied
animal cells and helped
contribute to the
‘Cell Theory’.
SCHWANN
Provides electricity in
order to operate the
microscope.
POWER SWITCH
A tool used to view small
objects that cannot be
easily seen by the
naked eye.
MICROSCOPE
Holds the objective lenses
and allows them to be
rotated during use.
NOSEPIECE
This term is used to
describe a microscope
that remains focused on
high power once focused
on scanning power.
PARFOCAL
Magnifying lenses
located closest to the
specimen being viewed.
OBJECTIVE LENSES
The white circle you see
when you look through
the eyepiece with the
light turned on.
FIELD OF VIEW
(VIEWING CIRCLE)
Allows light to go
through the stage,
specimen, and the lenses
to your eye.
STAGE OPENING
(APERTURE)
What is the formula used to
calculate total
magnification?
OCULAR LENS x THE
OBJECTIVE LENS IN USE
(ex. 10x times 40x = 400x)
Supports the slide being
viewed; should be all the
way up before first focusing
the specimen.
STAGE
Scientist given credit for
developing the first
microscope.
JANSSEN
Regulates the amount of
light allowed through the
specimen and into
the body tube.
DIAPHRAGM
Where should you look
when changing from the
scanning power to a
higher power?
TO THE SIDE OF THE
STAGE
(NOT THROUGH THE EYEPIECE)
Provides light necessary to
view the specimen.
LAMP
(LIGHT SOURCE)
Supports the weight of the
entire microscope; used to
carry the microscope.
BASE
Which objective lens
provides the greatest
field of view?
SCANNING