Discovery Telecom Biological Microscope Manuale di istruzioni - Pagina 5
Sfoglia online o scarica il pdf Manuale di istruzioni per Microscope Discovery Telecom Biological Microscope. Discovery Telecom Biological Microscope 8. 1200x magnification microscope
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The highest
magnification is not
always the best for
every specimen!
How do I observe the specimen?
Sitting in your location with adequate
illumination chosen from the colour filter wheel,
the following basic rules should be observed:
Start with a simple observation at the lowest
magnification. Position the object or specimen
in the middle of the stage under the stage clips,
centred over the lower light. Focus the image
by rotating the focus knob until a clear image
appears in the eyepiece.
Place the prepared slide directly under
the objective on the microscope stage, and
secure it with the stage clips. The prepared slide should be located directly over the lower
illumination. Look through the eyepiece, and carefully turn the focus knob until the image
appears clear and sharp. Now you can select a higher magnification by rotating to the
30x/600x objective turret. Higher levels of magnification can be achieved by turning the
objective turret to a higher setting (600x or 1200x). Following this procedure creates a
steady increase of magnification without overpowering the view of the object. The following
magnifications should be considered: 300x, 600x, then 1200x. Each time the magnification
changes (due to the objective change), the image sharpness must be readjusted with the
focus knob. When doing this, be careful because if you move the microscope stage too
quickly, the objective and the slide could come into contact and cause damage to the slide or
microscope.
For transparent objects (e.g. sea salt), light is projected by the lower light traveling from
below the stage, through the objective and eyepiece, and finally into your eye. This process
of light transmission is known as microscopy. Many micro-organisms found in water, plant
components, and the smallest animal parts are transparent in nature. Opaque specimens,
on the other hand, will need to be prepared for viewing. Opaque specimens can be made
transparent by a process of treatment and penetration with the correct materials (media),
or by slicing. You can read more about creating specimens in the following Microscope
Experiments booklet.
Magnification Guide
Eyepiece
Objective
20x
20x
20x
Problem
No recognizable image
No image
No light
Power
15x
300x
30x
600x
60x
1200x
Troubleshooting Table
Solution
Turn on light
Readjust focus
Start with the
lowest power objective (15x)
Centre object on slide under
lowest power objective (15x)
Replace batteries
Check on/off position
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