MICROSCOPE (3).ppt

1. Parts of Microscopes
Intro to Microscopes

2. OBJECTIVE
Identify parts of the
microscope and
their functions

3. Microscope
One of the most important
tools used to study living
things.
“Micro” means very small
“Scope” means to look at
Diagram of a typical student light microscope,
showing the parts and the light path

4. Test Your Knowledge
#1
The word “microscope” means:
A. Glass eye
B. Small ~ to look at
C. To search for

5. You are Correct!
The word “microscope” means
VERY SMALL ~ TO LOOK AT

6. Oops!
Micro means “very small”
Scope means “to look at”
What do you think microscope might
mean?

7. Basic Microscope Parts

8. Guess What?
We will now look at the major parts of the
microscope and what their functions are that enable
us to see very small things.

9. Introducing the Arm and
Base
Arm
Base

10. Arm
• Supports the upper parts
of the microscope
• Used to carry the
microscope
• When carrying a
microscope, always
have one hand on the
arm and one hand on
the base. Use two
hands!!

11. Base
• Supports the whole
microscope
• Used to carry the
microscope
• When carrying a
microscope, always
have one hand on the
arm and one hand on
the base. Use two
hands!!

12. Click on the ARM

13. Click on the Base

14. Stage and Stage Clips
Stage
Stage Clips

15. Stage
• Supports the slide
• The slide contains the specimen or object
that you are viewing with the microscope.

16. Stage Clip
• Helps to hold the slide in
place
• Usually one on each side
of the hole (stage
opening) = 2 stage clips
• The stage opening
allows light to pass from
the light source to the
lenses.

17. Test your Knowledge
#2
#1 Leg or Arm
#2 Stage or Table
#3 Base or Place
Can you name it?
Click on correct name

18. Great!!
The ARM supports the BODY TUBE and is used to
carry the microscope.

19. Super!!!
The STAGE is the name
given to where you would
place the slide with the
object you wish to view
more closely.

20. Awesome !!
You are right. The BASE is located at the
bottom and supports the microscope.

21. Oops! Let’s Try Again

22. Eyepiece (Ocular Lens)
and Body Tube
Eyepiece
The lens you look through that
magnifies the specimen.
Body Tube
The hollow tube through which
light passes. It holds the lenses
apart.

23. Click on the Eyepiece

24. Click on the Body Tube

25. Course and Fine Focus
Course Focus
Raises or lowers the Body
Tube to focus
Fine Focus
Raises and lowers the
Body Tube and used to
bring objects into focus.

26. Click on the Course and
Fine Focus Knobs

27. Test your Knowledge
#3
Click on correct name:
Scope or Eyepiece
Body Tube or Pipe
Control or Fine Focus

28. Nice Job
Wow! You are Correct!
The EYEPIECE OR OCULAR LENS is the
lens that you look through that magnifies
the specimen.

29. Wow
You are Correct!
The BODY TUBE is the hollow tube
through which light passes.

30. Yes!!!
The Course/Fine Focus raises and lowers the
Body Tube. It is used to bring things into focus.

31. Oops!!
Try Again

32. Nosepiece
The NOSEPIECE is
the round part that
holds the OBJECTIVE
LENSES apart.

33. Low Power/High Power
Objective Lenses
Low Power Objective
Magnifies the specimen at a
lower power
High Power Objective
Magnifies the specimen at a
Higher power

34. Click on the Nosepiece

35. Click on the Objective
Lenses

36. Diaphragm and
Light Source
Diaphragm
Changes the amount of light
reaching the objective lenses.
Located under the Stage.
Light Source
Located beneath the Stage
and Diaphragm. Sends light
towards the hole in the stage.

37. Click on the Diaphragm

38. Click on the Light
Source

39. Test Your Knowledge
#4
4. Ears or Nosepiece
5. Objective or Scope
Lens
6. Diaphragm or Throat
Can you name it?
Click on the correct part

40. Super Dooper
The NOSEPIECE hold the OBJECTIVE LENSES apart.

41. Doing Great
The microscope has several OBJECTIVE
LENSES. Each lens has a different
magnification power.

42. Correct Again
The DIAPHRAGM
regulates the amount
of light that reaches the
objective lens.
It is located at the bottom
of the microscope.

43. Try Again
Check the diagram

44. Great Job!
Well Done
Now that we have
learned the parts let’s
see how we can use
the microscope.

45. Follow these instructions when using the
microscope. Click on each underlined word.
1. To carry the microscope, grasp the
ARM with one hand. Hold the BASE with
your other hand.
Using the Microscope in
10 Steps

46. 10 Steps to
Using the Microscope
2. Adjust the DIAPHRAGM while looking
through the EYEPIECE.
3. Adjust the LIGHT SOURCE (mirror) until
you see the circle of light.

47. 10 Steps to
Using the Microscope
4. Place the slide on the STAGE.
5. Center the SPECIMEN over the small
opening on the STAGE.
6. Secure the slide with the STAGE CLIPS.

48. 10 Steps to
Using the Microscope
7. While looking at the STAGE from the side,
turn the COURSE FOCUS KNOB to lower
the BODY TUBE until the LOW POWER
OBJECTIVE almost touches the slide.

49. 10 Steps to
Using the Microscope
8. While looking through the EYEPIECE, carefully
move the COURSE FOCUS KNOB until the
specimen comes into view.
9. To switch to the HIGH POWER OBJECTIVE
LENS, look at the microscope from the side.

50. 10 Steps to
Using the Microscope
10. Move the NOSEPIECE until the HIGH POWER
OBJECTIVE LENS “clicks” into place. If the
lens hits the slide, the slide and/or lens might
break.
Turn the FINE FOCUS KNOB until the
specimen comes into focus.

51. Specimen

52. EYEPIECE

53. EYEPIECE

54. BODY TUBE

55. ARM

56. STAGE CLIPS

57. COURSE FOCUS

58. COURSE FOCUS

59. BASE

60. NOSEPIECE

61. HIGH POWER
OBJECTIVE LENS

62. HIGH POWER
OBJECTIVE LENS

63. LOW POWER
OBJECTIVE LENS

64. STAGE

65. STAGE

66. DIAPHRAGM

67. LIGHT SOURCE

68. FINE FOCUS KNOB

69. Microscope Examples

70. Interesting Things to
See Using Microscopes
Onion Skin Cheek Cell
Red Blood Cells Skin Cell

71. Certificate
of Completion.
You did a really
great job!
Congratulations!!
For cool information on How a Microscope Works go to:
http://science.howstuffworks.com/light-microscope1.htm