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17 Cards in this Set
- Front
- Back
Coarse adjustment knob
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moves the body tube for focusing with the low power obkective lens
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fine adjustment knob
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moves the body tube for focussing with the high power objective lens
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arm
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supports the body tube
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stage
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supports the slide being used
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stage clip
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holds the slide being used
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base
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supports the microscope
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eyepiece
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contains a lens that magnifies about 10x
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body tube
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separates the eyepiece lens from the objectives lens
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nosepiece
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holds the low power and the high power objectives lenses; allows the lenses to rotate for viewing
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high power objectives lens
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magnifies 40x
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low power objectives lens
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magnifies 10x
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diaphragm
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controls the amount of light passing through the opening of the stages
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mirror
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relects light upward thorough the diaphragm
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what are the steps to focus?
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Put your slide on the stage, then pick if you want low power or high power objective and use the coarse knob (low power) or the fine knob (high power) to adjust the specimen, then look through the eyepiece and see if its clear to see
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What is the formula to calculate total magnification?
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eyepiece power x objective lens power
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What is the cell theory?
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- All living things are composed of cells
- Cells are the basic units of structure and function of living things - All cells are produced from other cells |
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What did the following scientist do?
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Anton Van Leeuwenhook- Discovered one-celled oraganisms
Robert Hooke- Invented microscopes and discovered cells Mattias Schleiden- Discovered that all plants are made up of cells Theodor Schwann- Discovered that all animals are made up of cells Rudolph Virchow- Figured out that all cells come from cells |