Microscope The Pieces and Parts

Body Tube

• #1 in picture

• Allows light from objectives to pass upward to form first image.

Eyepiece (ocular lens)

• # 9 on picture

•10 x magnification of image

Revolving Nosepiece

• # 2 in picture

• Holds the 3 objectives• Allows objectives to rotate into

position• (listen for the CLICK!)

Objectives

• Low Power: 4 x magnification(#3) also called “scanning”

• Medium: 10 X magnification(#4)

• High: 40x or 43x magnification(# 5)

Total Magnification

• Ocular lens x objective lens = total magnification

• Ex: • Ocular x low power = 10 x 4= 40 x magnification• Ocular x medium = 10 x 10= 100 x magnification• Ocular x high power =10 x 40= 400 x magnification

Stage Clips and Stage

• # 6 clips • # 11 stage

• Clips- holds specimen in place on stage

• stage- platform to hold the specimen on microscope

Diaphragm

• # 7

• Regulates amount of light on the specimen. • Ranges from 1 to 5

(1 smallest….to 5 largest)

Light Source, Arm, and Base

• # 8 light source• # 10 arm• # 14 base

• Light source: helps image show better (Can be light or mirror)

• Arm: used to carry microscope• Base: used to support when carrying

microscope

Course Adjustment Knob

• # 12

• Larger knob on microscope• Moves stage up and down• Used for initial focus of specimen

• DO NOT USE ON HIGH POWER!!!!!!!

(Or you will BREAK the slide!!!)

Fine Adjustment Knob

• # 13

• Used to fine tune the image•Makes sharper/clearer

BE READY FOR A QUIZ!!!!

TOMORROW!!*****

You must pass to do the microscope lab…