Once the object is in focus with lowest power, it should also be almost in focus with the higher power.
"http://wiki.answers.com/Q/What_does_the_term_parfocal_mean_and_what_is_its_importance_in_microscopy"
parfocal is the ability to move from high power to low power with minor adjustments. So i your microscope is parfocal it can switch from HP to LP easily
When a microscope is parfocal it will stay in focus when the magnification is changed.
When a microscope is parfocal it will stay in focus when the magnification is changed.
the magnifyings system include the eye piece i.e. ocular lens and objective i.e. parfocal lenses
Parfocal microscopes are made so you don't have to refocus when you change between magnifications. Having a parfocal microscope is convenient and is easier on the eyes.
parfocal
A dissecting microscope - this is used for larger organisms.
I used a electric microscope at school, and it worked for me.I would like to say, try it out if you can!The study with micro scope is called microbiology.we can use microscope to study the micro organs like bacteria, and blood cells.
The advantage of a parfocal microscope=when different objective lenses are rotated, the object being examined will remain in view
parfocal
A "parfocal" microscope maintains its position as objectives are changed.
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).
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.
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
it is parfocal
I think it is parfocal
Parfocal
parfocal
I think it's Resolution.....
parfocal