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When focusing the microscope downward, you take the chance of damaging the expensive objective lens by crushing the slide trying to get it.

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kay

Lvl 2
2y ago

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You should always use the fine adjustment on a microscope when you are focusing on high-power magnifications, typically 400x and above. The fine adjustment allows for precise focusing, which is crucial for observing details without risking damage to the slide or the lens. It is also recommended to use the fine adjustment after initially focusing with the coarse adjustment to enhance clarity.


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You should always use the fine adjustment knob when you need to make precise focusing adjustments to obtain clear and sharp images in microscopy. It allows for small, controlled movements to achieve optimal focus.


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Why should you never rack downwards with the coarse focusing while you are looking down the microscope?

The object on the viewing stage is close to the lens of a microscope. Racking downward risks the lens touching the object and damaging either the object itself or the lens. Before moving the lens down, make sure you can see the lens and the object from the side of the microscope to void the two touching each other.


When you are focusing on a object in which order should the three objective lenses always be used?

When focusing on an object using a microscope, you should always start with the lowest power objective lens first (usually the scanning lens, 4x), then move to the medium power lens (10x), and finally to the highest power lens (40x or higher). This order helps prevent damage to the slide and the lens, and makes it easier to locate and focus on the specimen. Always ensure the stage is lowered when switching to higher magnifications to avoid crashing the objective into the slide.


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Why why should you always move object lens away from the slide when you're focusing a microscope?

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