EXERCISE#1: The Microscope Flashcards

1
Q

The word “microscope” comes from the Latin “___________,” which is derived from the Greek words “______,” meaning “small,” and “_______,” meaning “to look at.”

A
  1. microscopium
  2. mikros
  3. skopein
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2
Q

What is the main function of a microscope?

A

It is an instrument that makes an enlarged image of a small object, thus revealing details too small to be seen by the naked eye.

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3
Q

What do you call the use of a microscope to magnify objects that are too small to the naked eye?

A

Microscopy

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4
Q

Light Microscopy/ Bright field is also known as?

A

Compound Light Microscope

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5
Q

What is the definition of a Light Microscopy/ Bright field?

A

It is an optical microscope that uses light rays to produce a dark image against a bright background.

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6
Q

The bottom of the microscope, used for support

A

Foot/Base

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7
Q

This is a sturdy metallic backbone of the microscope, used to carry and move the microscope from one place to another.

A

Limb/Arm

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8
Q

It is found just below the objectives and this is where the specimen is placed, allowing movement of the specimen around for better viewing with the flexible knobs and it is where the light is focused on.

A

Stage

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9
Q

It can move round to any position depending on the objective lens to focus on the image.

A

Revolving Nosepiece

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10
Q

It is positioned on the mechanical portion of the stage allows the Microscopist to note the location of important specimen details.

A

Graduated locator markings

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11
Q

What allows microscopes to provide magnified, real images and are, perhaps, the most complex component in a microscope system because of their multi-element design?

A

Objectives

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12
Q

What Are the Four Different Magnifications of Objective Lenses?

A
  1. Scanning Objective Lens (x4)
  2. Low Power Objective Lens (x10)
  3. High Power Objective Lens (x40)
  4. Oil Immersion Objective Lens (x100)
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13
Q

What is the part of the microscope that magnifies the image produced by the microscope’s objective so that it can be seen by the human eye.

A

Eyepiece/ Ocular Lenses

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14
Q

It is positioned in a reflective housing that projects light through the collector lens and into the substage condenser.

A

Light source/ Illuminator

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15
Q

It is located beneath the stage and serves to gather wave fronts from the microscope light source and concentrate them into a cone of light that illuminates the specimen with uniform intensity over the entire view field.

A

Condenser

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16
Q

They are generally fitted onto compound microscopes to allow only light waves of a certain color to pass through.

A

Filters

17
Q

What are the ten parts under the Adjustment System?

A
  1. X and Y-axis Adjustment Knob
  2. Observation Tube Adjustment Knob
  3. Coarse Adjustment Knob (LPO)
  4. Fine Adjustment Knob (HPO)
  5. Light Intensity Adjustment Knob
  6. Condenser Adjustment Screw
  7. Iris Diaphragm Ring
  8. Interpupillary Distance Adjustment
  9. Diopter Adjustment Ring
  10. Pre Focusing Knob
18
Q

A rapid control which allows for quick focusing by moving the objective lens or stage up and down.

A

Coarse Adjustment Knob

19
Q

A slow but precise control used to fine focus the image when viewing at the higher magnifications.

A

Fine Adjustment Knob

20
Q

What alters the light intensity?

A

Light intensity Adjustment Knob

21
Q

It is an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usually to regulate the aperture of a lens (as in a microscope)

A

Iris Diaphragm Ring

22
Q

This allows the oculars to move closer or further away from one another to match the width of an individual’s eyes.

A

Interpupillary Distance Ring

23
Q

Useful as a means to change focus on one eyepiece so as to correct for any difference in vision between your two eyes.

A

Diopter Adjustment Ring