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The advantage of a parfocal microscope=when different objective lenses are rotated, the object being examined will remain in view
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∙ 15y ago
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Why is it desirable for microscope lenses to be parfocal and parcentric?
Microscope lenses that are parfocal and parcentric allows the user to changed between lenses will keeping the speicemen focused and centered, instead of having to adjust the x, y or z plane (i.e. focus and the stage).
How to describe the feature of the microscope that makes it possible to move among the objective lenses with only minor focusing?
Parfocal
Parts of magnifying system of a microscope?
the magnifyings system include the eye piece i.e. ocular lens and objective i.e. parfocal lenses
What is parfocal capability?
lenses: set up or arranged so that when one lens is changed for another, there is no change in focus. * Applied usually to turret mounted lenses e.g. on microscope; also in telescopes: ~ eyepieces: changing one for another does not require refocusing. * When the distance from the object to the rear principal plane of each lens is equal, they are said to be parfocal.
A type of lens that keeps an image in constant focus while appearing to glide toward or away from the subject without any camera movement is called?
Parfocal, commonly used in high end zoom lenses and video lenses.
What property of a compound light microscope enables a person to change objectives without major focusing adjustments?
It's Parfocal property."Parfocal: This is a focus issue. When changing from one objective to another, the new image should be either in focus or close enough so that you can refocus with only minor adjustments. Most microscopes are parfocal." from www.microscope-microscope.org
What word is used to indicate if object is in focus at low power it will also be in focus at high power?
parfocal
Why is it helpful for a microscope to be parfocal?
Once the object is in focus with lowest power, it should also be almost in focus with the higher power.
What is the one advantage of combination of lenses?
Every lens causes color aberration. (called dispersion). By using a combination of lenses it can be reduced.
What advantage is there to LASIK surgery?
The goal for most patients is to be free of any type of corrective lenses.
What are the advantages of wearing color contact lenses?
To correct visual defects and ametropies, another advantage is that fog is not visible to people who wear contact lenses, and it helps people see better.
A microscope that maintains focus when the objective magnification is increased is called?
parfocal
