What is the definition of parfocal in relation to microscopes How much of a specimen remains in clear focus when you are focused

Question

What is the definition of parfocal in relation to microscopes How much of a specimen remains in clear focus when you are focused on one part of the specimen 3D focus Where the lens bend the light so that the image is inverted both top bottom and left right The closest distance between 2 points or objects where they can still be distinguished as separate and distinct points O How much area on the slide you can observe without having to move the specimen with the stage adjustment knobs inversely proportional to objective lens magnification Once you get an object in focus using one objective lens you should be able to change objective lenses and only need to make focusing adjustments with the fine focus knob O Calculated by multiplying the ocular lens eye piece typically 10X magnification by the objective lens magnification

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