Question

why should you use the scanning objective to find objects first? why should you move the...

why should you use the scanning objective to find objects first?

why should you move the stage away from the objectives to focus on an object rather than moving them moving them toward each other?

should you move the coarse adjustment while on high power? why or why not?

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Answer #1

Answer 1) The Scanning objective is useful for getting an overview of the slide. This scanning objective is used handy with some of the slides that contain whole organs.

Answer 2) Many microscopes are focused by moving the stage up and down while the objective lens is stationary. But sometimes, when you move closer while looking through the lens, there is a risk, it could be damaged.

Answer 3) The coarse adjustment is only used with the lowest power objective lens. Once it is in focus, only fine focus is needed to be used. Also, it is advisable to use coarse focus only with the 4x low power objective whereas fine focus can be ued with all objectives.There are many reasons for why not. First is that the image moves in and out of focus too quickly, so that it is difficult to precisely adjust the focus. Second, there is a risk of crashing the objective into the slide.

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