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Title: Microscopes slides
Description: In the slide you will see the basic structure of a microscope.
Description: In the slide you will see the basic structure of a microscope.
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Microscopes
History
• 1590 – first compound microscope
• 1655 – Robert Hooke used a compound
microscope to observe pores in cork and called
them “cells”
• 1674 – Antonie van Leeuwenhoek was the first to
see single celled organisms in pond water
Types of Microscopes
Compound Light Microscope
• 1st type of microscope
• Most widely used
• Light passes through 2 lenses
• Can magnify up to 2000x
Types of Microscopes
Electron Microscope
• Used to observe small objects: viruses, DNA, parts of
cells, etc
...
Always start with the scanning objective
•
2
...
Use the coarse knob to focus and then the fine
until clear
Use the coarse knob to focus and then the fine
until clear
Switch to high power
•
Only use the fine adjustment to focus
Cleaning and Storing
• Clean only with a soft cloth
• Make sure it is on a flat surface
• Carry with two hands
• Store with the scanning objective in place
• Wrap cords and cover microscope
• Place in the designated area
Question 1
Which part of the
microscope holds
the ocular lens?
Question 2
What is the purpose
of the coarse
adjustment knob?
Question 3
Explain how to
properly carry a
microscope from
one place to
another
Title: Microscopes slides
Description: In the slide you will see the basic structure of a microscope.
Description: In the slide you will see the basic structure of a microscope.