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29 Cards in this Set
- Front
- Back
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1590, Dutchmen who put 2 magnifying lenses in a tube
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Zacharias Janssen
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Lets light pass thru an object and then thru 2 or more lenses
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Compound Light Microscope
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What part of Microscope do you look thru (usually 10X)
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Eyepiece
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What 2 lens make up a compound microscope
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eyepiece lens & Objective lens
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What is the high power on our microscopes?
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43X objective 10X eyepiece 430 total
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If a Microscope has a 10X eyepiece and a 43X objective lens, what is the total power?
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430X
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Gives a 3D view, has an objective and ocular for each eye, use to loook at thick structures.
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Stereo Microscope
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Uses a magnetic field instead of lenses to bend elctrons, magnifies up to 1,000,000 times
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Electron Microscope
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Type of microscope where objects viewed are sliced very thin, only dead cells and tissues can be observed this way.
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Transmission
Electron Microscope (T.E.M.) |
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Microscope used to view surface of abjects, can be used on living cells.
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Scanning
Electron Microscope (S.E.M.) |
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1665, who looked at cork, thought the little blocks under his microscope looked like cells, first use of word cell
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Hooke
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1838, German scientist who concluded all animals made up of cells.
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Schleiden
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1839, German scientist. concluded that all animals are made up of cells
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Schwann
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1853, German doctor hypothesized that new cells from from other cells dividing
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Virchow
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Cell Theory
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All organisms made up of cells
Cells= basic structure & function in all orgs. All cells come from cells that already exist. |
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Part of microscope that holds slide
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stage clips or clips
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part of microscope that adjust s light passing thru slide/object
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Diaphragm
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2 parts of preared slide
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cover slip & slide
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Used to carry microscope
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Arm
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Bottom of Microscope
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Base
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Place where slides clip to microscope for viewing
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Stage
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Part of microscope directly below eyepiece
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Tube
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Contains objective lenses, usually revolves
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Nose, nose piece
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Moves quickly, adjusting distance between stage and objective lenses.
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Coarse focus
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Moves slowly, adjusting distance between stage and objectives.
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Fine Focus
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Provides light for microscope
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Light Source
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4X 10X
10X 43X 43X |
Objective lens power of our school's microscopes
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total power high of our microscopes
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430X
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total power low of our microscopes
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40X or 100X
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