Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Magnification | The degree to which the image of a specimen is enlarged.
🗑
|
||||
| Resolution | The ability to distinguish individual features as separate; the ability to see detail. Typically,as magnification increases it increases.
🗑
|
||||
| Contrast | How well features stand out against the background. Magnification does not affect it. To improve it a biological stain must be used. (Blue idion -plant tissue)
🗑
|
||||
| Field of view | The area seen when looking through the ocular lens. As magnification increases, it decreases....the circle visible through the lenses.
🗑
|
||||
| Diameter of field | The measure length of the field view.
🗑
|
||||
| Depth of focus/field/view | The vertical distance always in focus with a particular objective lens. As magnification increases, it decreases.
🗑
|
||||
| Working distance | The vertical distance from the specimen to the objective lens when focused. As magnification increases, it decreases.
🗑
|
||||
| Parfocal | The ability to change magnification and keep the image focused.
🗑
|
||||
| Parcentral | The ability to change magnification and the image centered in the field of view.
🗑
|
||||
| Compound Light Microscope (lens & magnification) | Ocular lens or eyepiece (10x)
Scanning objective lens.(4x)
Low power objective lens (10x)
High-def objective lens. (40x)
Oil immersion objective lens (100x)
🗑
|
||||
| Stereo/dissecting microscope (lens & magnification) | Ocular (1x)
10x objective
20x objective
🗑
|
||||
| 2 types of microscopy | 1. Electron microscopy
2. Light microscopy
🗑
|
||||
| 2 types of electronic microscopes | Scanning electron microscope- reflects the beam off the surface of the specimen and is therefore useful for observing surface features.
Transmission electron microscope-
Transmits the electron beam through the specimen and is useful for observing internal
🗑
|
||||
| Compound Light Microscope | Uses more than one lens...results in inversion....use transmitted light which pass through the specimen...useful in observing internal features.
🗑
|
||||
| Stereo/dissecting microscope | Uses single length to produce magnified image so inversion doesn't occur....uses reflected light which bounced off the surface of the specimen....useful for observing surface features.
🗑
|
||||
| Ocular lens (eyepiece) | 10x
🗑
|
||||
| Viewing head | Hold the ocular lenses
🗑
|
||||
| Arm | Support upper parts and provides carrying handle.
🗑
|
||||
| Nose piece | Revolving device that holds objective.
🗑
|
||||
| Scanning objective len | The shortest...used to scan the whole slide...magnifying power 4x
🗑
|
||||
| Low-power objective lens | Used to view objects in greater details....magnifying power 10x
🗑
|
||||
| High-power objective lens | Largest of scanning and low-power lens....used to view greater details ...magnifying power 40x
🗑
|
||||
| Oil - immersion objective lens | Holds a 95x to 100x lens...used in conjunction with immersion oil to view objects with the greatest magnification
🗑
|
||||
| Stage | Holds & supports microscope slides. Mechanics one is movable
🗑
|
||||
| Coarse - adjustable knob | Used to bring object into approximate focus;..used only with low powered objective
🗑
|
||||
| Fine-adjustment knob | Used to bring object into final focus
🗑
|
||||
| Condenser | Lens system below stage used to focus the beam of light on the object being viewed
🗑
|
||||
| Diaphragm or diaphragm control lever | Controls the amount of illumination used to view the object.
🗑
|
||||
| Light source | An attached lamp that directs a beam of light up through the object.
🗑
|
||||
| Base | The flat surface of the microscope that rests on the table.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
1394349
Popular Chemistry sets