This document provides an introduction and overview of microscopes. It discusses the basic parts of a microscope including the eyepiece, objective lenses, stage, and condenser lens. It explains how to properly use and focus a microscope. The document also covers the different types of microscopes, including compound, stereoscopic, electron, and specialized microscopes. It provides descriptions of optical and electron microscopes and their distinguishing features.
2. •
•
•
•
•
Always carry with 2 hands
Only use lens paper for cleaning
Do not force knobs
Always store covered
Keep objects clear of desk and cords
3. • Place the Slide on the
Microscope
• Use Stage Clips
• Click Nosepiece to the lowest
(shortest) setting
• Look into the Eyepiece
• Use the Coarse Focus
4. •
•
•
•
Follow steps to focus using low power
Click the nosepiece to the longest objective
Do NOT use the Coarse Focusing Knob
Use the Fine Focus Knob to bring the slide
What can you find on your slide?
19. ELECTRON MICROSCOPE
• USES ELCTRON TO LIGHT
AN OBJECT. THIS TYPE OF
MICROSCOPE CAN
RSOLVE MUCH SMALLER
OBJECTS DOWN TO A
WAVELENGHT OF 0.5
ANGSTROM
20. LOUIS DE BROGLIE
• DEVELOPED
ELECTRON
MICROSCOPE
• TOGETHER WITH
GEORGE THOMSON
23. • 1. SIMPLE MICROSCOPE
–TH SIMPLEST FORM OF
MICROSCOPE WHICH
CONSISTS OF ONE DOUBLE
CONVS LENS WITH A SHORT
FOCAL LENGTH . THE LENS IS
CAPABEL OG MAGNIFYING AN
OBJECT FROM 15 X TO 2000X
24. COMPOUND MICROSCOPE
• USES VISIBLE LIGHT TO PRODUCE
A MAGNIFID IMAGE OF AN OBJECT
• COMPOSED OF OBJECTIVE LENS
AND OCULAR LENS.
25. SPECIAL PURPOSE OF
OPTICAL MICROSCOPE
• STEOREOSCOPIC M
ICROSCOPE
– PRODUCES A 3DIMENSIONAL IMAGE
THAT HAS ITS RIGHT SIDE
UP
Students will have their microscopes out, for reference as we go through each of the steps. As an introduction, students will be asked what kinds of things they can do with this tool.
Teacher demonstrates how to hold the microscope, where the lens paper is located and how to use it. Students will be invited to turn the knobs and observe the stage as it moves up and down. Teacher will demonstrate how to store the microscope.
Give students a slide from the “common things” set, each student will practice focusing and changing objectives.
Have students exchange slides so they can look at different things, walk them through using the high power objective to focus slides. Emphasize not using the coarse objective during this process, as it will crack the slides.
This is the exact version of the microscope used in class. Students will be identifying the parts on the microscopes at their desks as we go along and what their functions are.