Mircoscope Parts & Functions | Microscope Parts and Functions #2 | Random | Types Of Microscopes/ Random | Steps of Cell Theory |
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Directs light from object to eye
What is the Body tube used for ?
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Lens closest to view's eye
What is Ocular Lens used for ?
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Is an image produced by a microscope
What is a Micrograph ?
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He said that every part of a plant is made up of cells
What did German botanist Mattis Schleiden say about plants in 1838 ?
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#1. All living things are made up of one or more cells
What is step 1 of cell thoery
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Holds the base of the microscope with the objectives and eye piece
What is the ARM used for ?
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Lens with least magnification
What does Low-power Objective do ?
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Uses a needle-like probe to measure the differences in voltage caaused by elcetrons, that leak, or tunnel, from the surface of the object being viewed
What is a Scanning Tunneling Microscope ?
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Uses a beam of light to produce enlarged images
What is a Light Microscope & what is it used for ?
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#2. Cells are the basic units of stucture and function in organisms
What is the 2nd step of cell theory
|
Holds objective
What does Revolving Nose Piece do ?
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Lens with great magnification
What does High-power Objective do ?
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Quality of making an image larger
What is a Magnification Micoscope ?
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Uses a beam of electrons to produce enlarge images
What is a Electron Microscope & what does it do ?
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#3.All cells arise from existing cells
What is the 3rd step of cell theory
|
Brings object into focus under low power
What is the Coarse Adjustment Knob used for ?
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Fine - tubes the focus under low power and high power
What is the Fine Adjustment Knob used for ?
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A measurment of the clarity of an image
What is Resolution ?
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He said cells come only from other cells
What did German physician Rudolph Virchow say about cells in 1858 ?
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He claimed that animals are also made up of cells
What did Theofor Schwaan cliamed about animals in 1839 ?
|
Light source
What is the LAMP/MIRROR used for ?
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He looked at pond water under a microscope and discovered unicellular organisms
What did Anton van Leeuwenhoek looked at & what did he discover in 1675 ?
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Controls the amount of light reaching the object
What is Diaphrapm do ?
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Scientists uses the metric systen to express measurements
Metric System is a decimal system
What is a Metric System ?
|
Robert Hooke discovered the cell.
he observed stems and roots of plants
What did Robert Hooke discovered in 1665 & what did he observed ?
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