Microscope Flashcards

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1
Q

What formula is used to determine microscopic magnification?

A

ocular lens power x objective lens power

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2
Q

How do you determine low power field of view?

A

measure the field diameter in mm, convert to micrometers

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3
Q

How do you determine medium power FOV?

A

low field diameter (in micrometers) x (low power magnification / medium power magnification)

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4
Q

How do you determine high power FOV?

A

low field diameter (in micrometers) x (low power magnification / high power magnification)

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5
Q

How do you calculate object size?

A

FOV diameter in micrometers / fit number (number of objects that fit in field)

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6
Q

How do you calculate drawing magnification?

A

drawing size (in micrometers) / object size (in micrometers)

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7
Q

What is a micrograph?

A

A picture taken with a microscope

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8
Q

What is the function of the eyepiece/ocular lens?

A

You look through it; magnifies the object.

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9
Q

What is the function of the tube?

A

Holds the eyepiece and the objective lenses at the proper distance from each other for functionality.

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10
Q

What is the function of the revolving nosepiece?

A

Rotating disk holds two or more objective lenses; turned to change lens.

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11
Q

What is the function of the objective lenses?

A

Magnify the object; each lens has a different power. There is a low, medium and high power lens.

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12
Q

What is the function of the arm?

A

Connects the base and the tube, used to carry the microscope.

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13
Q

What is the function of the coarse-adjustment knob?

A

Moves the tube up and down to bring the object into focus; only used with low power lens.

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14
Q

What is the function of the fine-adjustment knob?

A

Used with medium and high power lenses to bring the object into sharper focus.

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15
Q

What is the function of the stage?

A

Supports the microscopic slide. An opening in the centre allows light to pass through the slide.

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16
Q

What is the function of the stage clip?

A

Holds the slide in position

17
Q

What is the function of the condenser lens?

A

Directs light to the object being viewed.

18
Q

What is the function of the diaphragm?

A

Controls the amount of light reaching the object being viewed.

19
Q

What is the function of the light source?

A

Shining a light through the object being observed makes details easier to see.