WK 1 Flashcards
is the machine that is processing the work
Equipment
measures the data that comes out
of the machine to get feedback of the machine and the process
Instruments
_____ is a processing (attach with large assembly)
device but _______ is a measuring device (small
assembly
Equipment is a processing (attach with large assembly)
device but Instrument is a measuring device (small
assembly
which is often used to measure can be
classified as an instrument
device
generally needs to be connected to an
electrical source.
equipment
To study the morphological and staining
characteristics of microorganisms such as
bacteria, yeasts, molds, algae, and protozoa
Microscope
used in microbiology is a
precision instrument.
Compound Microscope
Calibrated mechanical stage,
adjustment knobs are easily damaged
Mechanical parts
is basically an optical system (for
magnification) and an illumination system (to make the
specimen visible).
microscope
a separate lamp
provides a focused beam of light which is reflected
upward through the condenser lenses by a mirror
reflected illumination
o Condenser serves two purpose:
- It regulates the amount of light reaching the
specimen. - It focuses the light coming from the light
source.
also collects the broad bundle of light
produced by the light source and focuses it on
small area of the specimen.
CONDENSER
regulates the amount of light reaching the
specimen
iris diaphgram
where the first magnification of the image takes place
objective lens
increases the apparent size of an
object
Magnification
The compound microscope has two lenses:
- First, near the stage called objective lenses.
- Second, eyepiece to enlarge the sample.
Microscopes in microbiology laboratories have
three objective lenses:
- Low Power Objective Lens (10X)
- High-dry Objective Lens (40X)
- Oil-immersion Objective Lens (100X)
desired lens is rotated into working position by
means of a
revolving nosepiece`
used to bring the image into
focus
coarse
and fine adjustment knobs
moves the nosepiece in
large increments and brings the specimen into approximate focus
coarse adjustment
moves the nosepiece in
large increments and brings the specimen into
approximate focus
fine adjustment
ability is to reveal
fine detail and to make small objectives clearly
visible.
resolving power of the lens
It is measured in terms of the smallest
distance between two points or lines where
they are visible as separate entities instead of
one blurred images
e resolving power
, allows us to predict which
objective lens should be used for observing a
given specimen
resolving power of the objective lens
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