The Microscope

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Slide 1

The Microscope

Mr. Ryan

6th Grade

Slide 2

The History

Many people experimented with making microscopes

Was the microscope originally made by accident? (Most people were creating telescopes)

The first microscope was 6 feet long!!!

The Greeks & Romans used “lenses” to magnify objects over 1000 years ago.

Slide 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

Robert Hooke

1635-1703

Hooke Microscope

Slide 4

The History

Zacharias Jansen

1588-1631

The “First” Microscope

Slide 5

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.

Slide 6

How a Microscope Works

Ocular Lens

(Magnifies Image)

Objective Lens

(Gathers Light,

Magnifies

And Focuses Image

Inside Body Tube)

Body Tube

(Image Focuses)

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).

Slide 7

The Parts of a Microscope

Slide 8

Body Tube

Nose Piece

Objective

Lenses

Stage

Clips

Diaphragm

Light Source

Ocular Lens

Arm

Stage

Coarse Adj.

Fine Adjustment

Base

Skip to Magnification Section

Slide 9

Body Tube

The body tube holds the objective lenses and the ocular lens at the proper distance

Diagram

Slide 10

Nose Piece

The Nose Piece holds the objective lenses and can be turned to increase the magnification

Diagram

Slide 11

Objective Lenses

The Objective Lenses increase magnification (usually from 10x to 40x)