introduction to the microscope history types care parts focusing
TRANSCRIPT
Introduction to the Microscope
History Types Care Parts
Focusing
Diggs?
Hans and Zcharias Janssen?
Who invented the microscope?
Antony van Leeuwenhook
Who really used the microscope?
He figured out that living things are made of cells.
Robert Hooke
Compound
-More than one lens
-Has own light
-Light must see through the sample
Types of Microscopes
Stereomicroscope/Dissecting
-Do not need light to pass through object
-Low magnification
Types of Microscopes
Electron
-Very powerful
-Passes electrons through an object rather than light
-Coat with gold or platinum to attract particles
Types of Microscopes
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-Support
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-Support
Stage - support
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-support
Stage - support
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-support
Stage - support
Coarse adjust – general focusFine Focus – medium and high power focus
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focusFine Focus – medium and high power focus
Base - support
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focusFine Focus – high power focus
Base - support
Light source
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focusFine Focus – high power focus
Base - support
Light source
Diaphragm – adjusts amount of light
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focusFine Focus – high power focus
Base - support
Light source
Diaphragm – adjusts amount of light
Stage clips – holds slide
Label the parts on your microscope picture. Eyepiece/ocular lens
magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focusFine Focus – medium and high power focus
Base - support
Light source
Diaphragm – adjusts amount of light
Stage clips – holds slide
Objective Lenses
Label the parts on your microscope picture.
Body Tube
Eyepiece/ocular lens magnification = 10X
Arm-Support
Stage - support
Coarse adjust – general focusFine Focus – high power focus
Base - support
Light source
Diaphragm – adjusts amount of light
Stage clips – holds slide
Objective Lenses
Revolving nosepiece
Magnification of a Compound Microscope•Because you are looking through multiple lenses the lenses have a “compounding” effect.
•The eyepiece always magnifies 10X
Eyepiece Objective Lens Magnification
Low Power
10X
4X
40XMedium Power
10X 10X
100XHigh Power
10X
40X 400X
The circular area viewed through the eyepiece.
Magnification – The number of times the image of an object is increased
insize by a lens system
FIELD OF VIEW
The number of times the image of an object is increased in size
by a lens system
MAGNIFICATION
Always carry with 2 hands – one on the base and the other on the arm
Do not force knobs Click Nosepiece to the lowest (shortest) setting
when done – otherwise known as the park position Cover the microscope when done
Place the Slide on the Microscope
Use Stage Clips Click Nosepiece to the
lowest (shortest) setting Look into the Eyepiece Use the Coarse Focus
Follow steps to focus using low power Click the nosepiece to the medium or longest
objective Bring the stage as close as possible to the
objective lens using the Coarse Focusing Knob
Use the Fine Focus Knob to bring the slide into focus