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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.
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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
A microscope that maintains focus when the objective magnification is increased is called?
A microscope with the ability to maintain focus when changing objectives is called a parfocal microscope. This feature allows for easier and faster transition between different magnifications while keeping the specimen in focus.
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).
Do prokaryotes have the capability to form multicellular structures?
No, prokaryotes do not have the capability to form multicellular structures.
Which organ in the human body has the remarkable capability to regenerate itself?
The liver is the organ in the human body that has the remarkable capability to regenerate itself.
What is the advantage of the parfocal lenses?
The advantage of a parfocal microscope=when different objective lenses are rotated, the object being examined will remain in view
If after focusing in low power only the fine adjustment need to be used to focus the specimen at the higher powers the microscope is said to be?
parfocal
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
Why is it helpful for a microscope to be parfocal?
Having a parfocal microscope means that when you switch to a higher magnification lens, the specimen stays nearly in focus. This saves time by reducing the need for constant refocusing when changing magnifications, allowing for a smoother and more efficient workflow during microscopy.
What is meant by the terms parcentric and parfocal?
Parcentric refers to the alignment of optical elements in a microscope so that the center of the field of view remains constant when changing objectives. Parfocal means that when changing objectives on a microscope, the image stays approximately in focus.
A microscope that maintains focus when the objective magnification is increased is called?
A microscope with the ability to maintain focus when changing objectives is called a parfocal microscope. This feature allows for easier and faster transition between different magnifications while keeping the specimen in focus.
What word is used to indicate if object is in focus at low power it will also be in focus at high power?
Parfocality is the term used to indicate that when an object is in focus at low magnification, it will also remain in focus at higher magnifications without the need for refocusing.
What word is used to indicate that if the object is in focus at low power it will also be in focus with high power?
parfocal
What word is used to indicate that if the object is in focus at low power it will also be in focus at high power?
Parfocal
What characteristic of a microscope enales one to switch from one objective to another without altering the focus?
it is parfocal
What is the microscope said to be when the fine adjustment is the only thing needed to be used to focus when in the highest power?
I think it is parfocal
What type of microscope doesn't change focus when shifting objectives?
A "parfocal" microscope maintains its position as objectives are changed.
