Unit Two: Microscope and Light

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Presentation transcript:

Unit Two: Microscope and Light PA State Standards

Microscope What is Magnification? A larger than life image

What tools can you use to magnify something? Telescope Magnifying glass Projector Binoculars Microscope Glasses

Microscope Who is Anton Van Leewenhoek First to construct a microscope and one of first to see microscopic organisms

Robert Hooke First to look at Cells under the microscope. He was looking at a piece of cork.

Types of Microscopes Electron Uses a beam of electrons to magnify an object Does not use light rays Can magnify 100,000 times Simple Uses 1 lens Uses light Magnifying glass Compound Uses at least 2 lenses Uses light Can magnify 1,000 times

Types of Microscopes

of the compound microscope Identify the parts of the compound microscope

1. BODYTUBE 8. LIGHT 2. NOSEPIECE 9. EYEPIECE 10. ARM 11. STAGE 3. LOW POWER OBJECTIVE LENS 10. ARM 4. MEDIUM POWER OBJECTIVE LENS 11. STAGE 5. HIGH POWER OBJECTIVE LENS 12. Coarse Focusing Knob 6. STAGE CLIPS 13. Fine focusing knob 7. DIAPHRAGM 14. Base

of the compound microscope Identify the parts of the compound microscope Eyepiece Nosepiece Body Tube Arm Objective Lenses Diaphragm Stage Coarse focusing Light Fine Focusing knob Base

Calculating Magnification How many times bigger are you making the object? To calculate, Multiply the Eyepiece X the Objective Lens