Bresser JUNIOR TELEMIKRO SET Instrucciones De Uso página 15

Your Microscope
What is a Microscope?
The microscope is made of two lens
systems: the eyepiece and the objective. We're
presenting these systems as one lens each,
so that it's easier to understand. In reality,
however, the eyepiece (1) and the objective in
the turret (3) are made up of multiple lenses.
The lower lens (objective) magnifi es the
prepared specimen (e.g. 11), which leads
to a magnifi ed image of the specimen. The
picture, which you can't see, is magnifi ed
once more by the second lens (eyepiece, 1).
Then, you can see the "microscope picture."
Assembly and Location
Before you start, choose an ideal location for
using your microscope. On the one hand,
it's important there is enough light (normal
observation). On the other hand, it's
important that you can quickly make the
room dark when you want to (projector
observation). Furthermore, I recommend that
you place the microscope on a stable surface,
since you won't be able to get any satisfactory
results on a shaky surface.
Normal Observation
For normal observation, place the microscope
in a bright location (near a window or desk
lamp, for example). Remove the microscope
from the package and tilt the microscope
arm (9) so that it's in a comfortable viewing
position for you.
The focus knob (2) is turned to the upper stop
and the objective turret (3) is set to the lowest
magnifi cation (display: 300x).
Now, take a look through the eyepiece
and adjust the mirror (5) so that you get a
uniformly bright circle of light. Or, you can use
the lamp. You'll fi nd further tips about the lamp
in the next chapter. Now, place a prepared
slide (e.g. 11) under the clips on the stage (4),
directly under the objective. When you take a
look through the eyepiece, you can see the
magnifi ed specimen. At this point, it might still
be a slightly fuzzy picture. The sharpness is
adjusted by slowly turning the focus knob (2).
You can now select a higher magnifi cation by
turning the objective turret and selecting a
different objective.
In doing so, note that the sharpness of
the picture must be adjusted again for the
higher magnifi cation. Also, the higher the
magnifi cation, the more light you will need for
good illumination of the picture.
TIP: Avoid positioning the mirror so that it is
exposed to direct sunlight, since it can cause
a glare, which won't allow you to get a clear
picture.
Electric Illumination
To use the electric light source (6), you need
two 1.5 V batteries, which are installed in
the base of the microscope (7). Remove the
rubber base (8) on the microscope and insert
the batteries according to the displayed +/-
information. Reattach the rubber base to the
microscope.
You can turn on the light by rotating it in the
direction of the stage (4). Take a look through
the eyepiece and adjust the light so that you
get optimal picture brightness. Now you can
observe in the same way as described in
point 1.3.
The bulbs for the electric light can be
replaced. One replacement bulb (14) is
included. When you use another bulb, make
sure to pay attention to the maximum wattage,
which is displayed on the lamp body.
TIP: The higher the magnifi cation used,
the more light is required for a good
illumination of the picture. Therefore, always
start your experiments with one of the lower
magnifi cations.
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