1. Section 7.1 Summary – pages 171-174
HISTORY
The microscope was invented in the late 1500s by Dutch spectacle-maker Zacharias Janssen.
It magnified objects 3 to 9 times its size.
Section 7.1 Summary – pages

2. Section 7.1 Summary – pages 171-174
HISTORY
The first person to observe single-celled organisms under a microscope was Anton van Leeuwenhoek
(Lay-vun-hook).
His was a simple light microscope because it contained one lens and used natural light to view objects.
Section 7.1 Summary – pages

3. Section 7.1 Summary – pages 171-174
HISTORY
Robert Hooke was an English scientist who lived at the same time as van Leeuwenhoek. He named “cells” and described them as the basic unit of life.
Hooke used a compound light microscope to study cork, the dead cells of oak bark.
Section 7.1 Summary – pages

4. COMPOUND LIGHT MICROSCOPE
Compound light microscopes use light to view and a series of lenses to magnify objects in steps.

5. Compound Light Microscope
Compound- because it uses more than one lens
Light- because it uses light to transmit the image to your eye
Microscope- “micro” means small
“scope” means view

6. Compound Light Microscope
Modern compound light microscopes can magnify an object up to 2000Xs its size.
                             
                              
Elodea
40 x
100x
400x

7. Electron Microscope
COST: BETWEEN $250,000 AND $2,000,000

8. Section 7.1 Summary – pages 171-174
MICROSCOPES
The electron microscope was first invented in the 1940s.
This microscope uses a beam of electrons to illuminate and then create an image that magnifies structures up to 500,000 times their actual size.
DUST MITE
Section 7.1 Summary – pages

10. Parts of the microscope
Where you look in, it has a 10X lens

11. Parts of the microscope
Magnify the object even more by different amounts

12. Helps zoom in and out fast Helps zoom in and out very carefully

13. Parts of the microscope
Allows light to shine through the slide
Where you put your slide

14. Turn to allow more or less light through

15. TAPE YOUR LABELED MICROSCOPE IN YOUR LAB BOOK
MAKE A TABLE OF CONTENTS ENTRY.
Make sure you put your comp. book in the cabinet for me to grade.