A detailed discussion of the different Parts and functions of the Microscope.ppt

It gives a detailed discussion about the parts of a microscope

1. Parts of the Microscope
and Their Function

2. S7LT -IIa - 1
Identify parts of the
microscope and their
functions

3. The History
• Hans and Zacharias Janssen of Holland
in the 1590’s created the “first” compound microscope
• Anthony van Leeuwenhoek and Robert
Hooke made improvements by working on the
lenses
Anthony van Leeuwenhoek
1632-1723
Hooke Microscope
Robert Hooke
1635-1703

4. Anthony van Leeuwenhoek
1632-1723

6. Robert Hooke
1635-1703

8. The History
Zacharias Jansen The “First” Microscope
1588-1631

9. Magnification
• To determine your magnification…you
just multiply the ocular lens by the
objective lens
• Ocular 10x Objective 40x:10 x 40 =
So the object is 400 times “larger”
Objective Lens have
their magnification
written on them.
Ocular lenses usually magnifies by 10x

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11. #9 Eye
Piece—The
part you
look at with
your eye.
Usually 10
X
magnificati
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#10 Neck –
Used to
safely
transport
microscope

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#11
Stage –
Slides
are
placed
on this

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#12 Coarse
Adjustment
– Used to
make large
changes in
focus. NOTE
Never use
this when
viewing on
high power

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#13 Fine
Adjustment
– Used to
small
adjustments
of focus

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#14 Base –
Used to
safely
transport
the
microscope

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#1 Tube –
Reflects
light up to
the viewers
eye

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#2
Revolving
Nosepiec
e – Allows
for quick
change of
objectives

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#3 Low
Power
Objective –
The first
lens you use
when doing
proper
microscope
work.
Usually 4 X

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#4 Medium
Power
Objective –
The second
lens you use
when doing
proper
microscope
work.
Usually 10 X

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#5 High Power
Objective – The
highest
magnification
used. Usually
43 X. NEVER
use the course
adjustment
when using
this lens.

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#6 Stage
Clips – Use
to keep the
slide in
place.

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#7 Diaphragm
– Use to vary
the amount of
light passing
through the
slide. Usually
it is better if
the amount of
light is low.

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#8 Light
Source –
Sends light
up through
the
diaphragm
and through
the slide for
viewing

25. How a Microscope Works
Convex Lenses are
curved glass used to
make microscopes
(and glasses etc.)
Convex Lenses bend
light and focus it in
one spot.

26. How a Microscope Works
Ocular Lens
(Magnifies Image)
Body Tube
(Image Focuses)
Objective Lens
(Gathers Light,
Magnifies
And Focuses Image
Inside Body Tube)
•Bending Light: The objective (bottom) convex lens
magnifies and focuses (bends) the image inside the
body tube and the ocular convex (top) lens of a
microscope magnifies it (again).

27. Caring for a Microscope
• Clean only with a soft cloth/tissue
• Make sure it’s on a flat surface
• Don’t bang it
• Carry it with 2 HANDS…one on the arm
and the other on the base

29. Using a Microscope
• Start on the lowest magnification
• Don’t use the coarse adjustment knob
on high magnification…you’ll break the
slide!!!
• Place slide on stage and lock clips
• Adjust light source (if it’s a mirror…don’t
stand in front of it!)
• Use fine adjustment to focus

30. Content, images, text, etc.
used belong to the rightful
owner. No copyright
infringement intended.