slide 1 “microscope” “vision is the art of seeing things invisible” john ruskin things...

Slide 1

““Microscope”Microscope”

““Vision is the art of seeingVision is the art of seeing things invisible”things invisible”

John RuskinJohn Ruskin

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Compound MicroscopesCompound Microscopes Instrument fitted with objective and eyepiece

lenses and used for viewing small objects. Use two sets of lenses to produce magnified

image (eyepiece and objective) Creates two-dimensional image (length and width)

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Parts of the MicroscopeParts of the Microscope

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EyepieceEyepiece

Contains the ocular lensContains the ocular lens Closest to your eyeClosest to your eye Magnifies the image produced by the objective Magnifies the image produced by the objective

lens (10x)lens (10x)

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AdjustmentsAdjustments

Coarse Adjustment: the control used to move Coarse Adjustment: the control used to move the objective lens or stage up and down the objective lens or stage up and down during initial focusing on a specimen.during initial focusing on a specimen.

Fine Adjustment: the control used to bring Fine Adjustment: the control used to bring the specimen into sharp focus by moving the the specimen into sharp focus by moving the objective stage up and down in very small objective stage up and down in very small increments. increments.

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Revolving NosepieceRevolving Nosepiece

The rotating device that holds the objective The rotating device that holds the objective lenses.lenses.

OBJECTIVES: Lens closest to specimenOBJECTIVES: Lens closest to specimen

High Power Objective: Lens with greater High Power Objective: Lens with greater magnification (43x, 40x)magnification (43x, 40x)

Low Power Objective: Lens with lower Low Power Objective: Lens with lower magnification ability (10x)magnification ability (10x)

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StageStage

Supports the slide being viewedSupports the slide being viewed

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Transporting MicroscopesTransporting MicroscopesOne hand on arm and one hand on One hand on arm and one hand on

base.base.

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SlidesSlidesRest on stage or platform and are Rest on stage or platform and are

held in place by stage clipsheld in place by stage clips

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Field of ViewField of View

The area visible through the microscope.The area visible through the microscope.

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Total MagnificationTotal Magnification

Eyepiece x Objective Lens=Total MagnificationEyepiece x Objective Lens=Total Magnification

(10x) x (40x) = 400x(10x) x (40x) = 400x

(10x) x (10x) = 100x(10x) x (10x) = 100x

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Best wishes with your Best wishes with your Microscope adventuresMicroscope adventures