ARM This part on the side of the microscope is used to support it when it is carried. COARSE ADJUSTMENT KNOB This part moves the stage up and down to help you get the specimen into view. FINE ADJUSTMENT KNOB This part moves the stage slightly to help you sharpen or “fine” tune your view of the specimen.
What supports the slide being viewed?
Base: The bottom of the microscope, used for support Illuminator: A steady light source (110 volts) used in place of a mirror. Stage: The flat platform where you place your slides. Stage clips hold the slides in place.
What is used to view a specimen?
Answer: In clinical settings, light microscopes are the most commonly used microscopes. There are two basic types of preparation used to view specimens with a light microscope: wet mounts and fixed specimens.
Which part of the microscope allows you to view the slide?
Parts of the Microscope
| A | B |
|---|---|
| The bottom part of the microscope. | base |
| Part of the microscope that supports the slide that is being viewed. | stage |
| Name for the small plastic or glass piece that is used to cover a water drop on a slide. | cover slip |
| Small glass plate on awhich specimen are placed for viewing. | slide |
Where the specimen is placed when being viewed?
Stage
Stage is where the specimen to be viewed is placed. A mechanical stage is used when working at higher magnifications where delicate movements of the specimen slide are required. Stage Clips are used when there is no mechanical stage.
What supports the slide and can be adjusted to allow viewing of different sections of a slide?
Diaphragm or Iris: The diaphragm or iris is located under the stage and is an apparatus that can be adjusted to vary the intensity, and size, of the cone of light that is projected through the slide.
What part of the microscope supports it?
Base
Base: The bottom of the microscope, used for support.
What are the two ways in which a specimen can be examined?
Immediate direct examination methods depend on the nature of the specimen. Diagnostic laboratory techniques include direct testing using a microscope, and immunological or genetic methods that provide immediate clues as to the identity of the microbe or microbes in the sample.
What is used to view the specimen of a microscope?
The eyepiece, also known as the ocular is the part used to look through the microscope. Its found at the top of the microscope. Its standard magnification is 10x with an optional eyepiece having magnifications from 5X – 30X. Objective Lens are the major lenses used for specimen visualization.
How does a diaphragm help in viewing the specimen in a microscope?
Condenser Diaphragm- This diaphragm controls the amount of light entering the lens system. This feature is useful for viewing unstained biological specimens that are translucent. Reducing the amount of light improves contrast, making the specimen “stand out” against the background.
What supports the upper part of the microscope?
The arm supports the upper parts of the microscope and is used to carry the instrument. The base supports the whole microscope. The body tube holds the eyepiece on one end and the nosepiece with the objective lenses on the other end.
Why is it necessary for the specimen to be observed under the microscope must be thin?
For a typical microscope, meaning it is not an electron microscope or other expensive and complex technology, a specimen must be very thin to allow light to pass through it.
What is the function of mirror?
Mirrors reverse the direction of the image in an equal yet opposite angle from which the light shines upon it. This allows the viewer to see themselves or objects behind them, or even objects that are at an angle from them but out of their field of view, such as around a corner.
Is used to support the microscope when carried?
ARM This part on the side of the microscope is used to support it when it is carried. COARSE ADJUSTMENT KNOB This part moves the stage up and down to help you get the specimen into view.
What supports the body tube and makes a good handle for carrying the microscope?
ARM This supports the body tube and makes a good handle for carrying the microscope. 11. STAGE It’s the place where you place the slide for viewing.
How does the view of a specimen changes as you increase the power of magnification?
The field of view is inversely proportional to the magnification power, meaning that as the magnification increases, the field of view decreases. As such, when the magnification is increased from 4x to 40x, the field of view decreases.
How do you do a slide show?
To start your slide show, on the Slide Show tab, select Play From Beginning. (If you’ve turned off the Simplified Ribbon, you don’t have a Slide Show tab; instead use the View tab to start Slide Show.) To skip to a particular slide, simply click it in this Grid view.
What does a mirror do on a microscope?
Plane or concave mirror, placed on the microscope base and used to send light onto the specimen and into the microscope optics. The mirror is mounted on a swiveling support, adjusted to reflect natural light or light from an artificial source in the desired direction.
How important is knowing the parts and functions of the microscope?
Knowing the names of the different parts of a microscope is important because it helps you communicate clearly with students or colleagues. Remembering the different parts is easy if you keep a labeled diagram with you and make sure you always use the proper terms when referring to the different parts of a microscope.
Where should a specimen be positioned under a microscope under low power to view it correctly?
The field of view is largest on the lowest power objective. When you switch to a higher power, the field of view closes in towards the center. You will see more of an object on low power. Therefore, it is best to find an object on low power, center it, and then switch to the next higher power and repeat.
What are the specimen preparations that you need to do in observing a specimen in a transmission electron microscope?
For TEM, samples must be cut into very thin cross-sections. This is to allow electrons to pass right through the sample. After being fixed and dehydrated, samples are embedded in hard resin to make them easier to cut.
Contents