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List the four assessments of the quality of the image being seen using a light microscope?
Wiki User
∙ 13y ago
[1] Brightness - How light or dark is the image? Brightness is related to the illumination system and can be changed by changing the voltage to the lamp (rheostat) and adjusting the condenser and diaphragm/pinhole apertures. Brightness is also related to the numerical aperture of the objective lens (the larger the numerical aperture, the brighter the image).
[2] Focus - Is the image blurry or well-defined? Focus is related to focal length and can be controlled with the focus knobs. The thickness of the cover glass on the specimen slide can also affect your ability to focus the image -- it can be too thick for the objective lens. The correct cover-glass thickness is written on the side of the objective lens.
[3] Resolution - How close can two points in the image be before they are no longer seen as two separate points? Resolution is related to the numerical aperture of the objective lens (the higher the numerical aperture, the better the resolution) and the wavelength of light passing through the lens (the shorter the wavelength, the better the resolution).
[4] Contrast - What is the difference in lighting between adjacent areas of the specimen? Contrast is related to the illumination system and can be adjusted by changing the intensity of the light and the diaphragm/pinhole aperture. Also, chemical stains applied to the specimen can enhance contrast.
FROM VLA hacker
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∙ 13y ago
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Which microscope creates an image of the surface of a sample?
A Reflecting light microscope. An electron microscope.
What are the advantages and disadvantages of monocular microscopes?
The advantages of a monocular microscope is that it is easier to use than a stereo microscope, a disadvantage of the monocular microscope is that it only has a singular eyepiece, therefore, it is harder to see the image. The advantages of a stereo microscope is having two eyepieces, it is easier to focus the eye, and therefore, you can see a more three-dimensional image. A disadvantage for the stereo microscope is that it is a lot more expensive than the monocular microscope.
What is a scanning microscope used for?
It is used for looking at parts at a very high magnification. It uses a a beam of electrons to create an image of the item being scanned and can magnify it up to 500,000 times.
Are images inverted with dissecting microscope?
Because as the image moves up the lens and into the head of the microscope, it hits a mirror that reflects the image back to you through the oculars, therefore you are looking at an inverted image.
What does the coarse-adjustment knob do on the microscope?
The coarse-adjustment knob moves the body tube up and down to allow focusing of the image.
How do you improve the quality of image under light microscope?
by focus and magnification
What is the image on the microscope?
What image? I don't see an image.
What microscope does not invert the image?
Dissecting Microscope
Which parts of a compound light microscope with clean lenses should be used to improve the quality of the image being observed in the high-power field of view?
You would use the diaphragm and fine-adjustment knob.
What is properties of image observed under dissecting microscope?
properties of the image under dissecting microscope
How does the microscope change the image you see?
Why is the image of a letter inverted under a microscope?because it has a mirror below the stage ( the one where the specimens are being examind ) it dont reflects sunlight but also the image of a letter
Which parts of a microscope forms an enlarged image of a specimens?
The lenses of a microscope form an enlarged image of a specimen.
What is the direction of movement of the image as move the specimen to the right?
If it is being viewed through a microscope - as the classification of the question would indicate - then the image moves to the left.
Does a microscope form a real image?
Actually, the image doesn't form in the microscope. The image forms on your retinas. The microscope focuses light in such a way that it comes together correctly on your retinas.
Which microscope provides a right-side-up image?
The stereoscopic microscope provides a right side up image
What type of image does a microscope give?
A microscope gives a microscopic image of what you have under it. This happens because the lense is curved
What wheel do you use on a microscope to make the image clearer?
To make the image clearer on a microscope you can use the focusing lens.
