Situation No. 1. Maria is about to start working on his experiment about plant cells using a compound microscope. He noticed that one of the objective lens is missing and revolving nosepiece is not working. The eyepiece lens is also broken.
Situation No. 2. Mario and his group are observing a wet mount. They are having difficulty viewing the specimen. They wanted to tilt the microscope hoping to get the proper position of the
Situation No. 3. After completing a laboratory experiment using a microscope, Linda immediately placed the microscope inside a laboratory cabinet containing other science instruments.
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Explanation:
Many important anatomical features, especially those that function at the tissue or cellular levels, are too small to be seen by the unaided eye. The compound microscope is a valuable tool for magnifying small sections of biological material so that otherwise inaccessible details can be resolved.
There are many different types of microscopes. We shall only learn about the compound light microscope. It uses visible light to visualize the specimen, but passes that light through two separate lens to magnify the image. The compound microscopes we will use in this course are sturdy instruments but they still have a lot of moving parts. They can be damaged and broken through misuse and mishandling. A large part of learning how to use the microscopes properly involves learning how to avoid damaging it. To do that, you first have to know which parts are which. Figure 4.1 identifies the key parts of the microscope that you need to be familiar with.
In Figure 4.1, there are two compound microscopes shown. The one on the left is monocular and the one on the left is binocular. Many of the parts of the two microscopes are in slightly different locations. Get used to this. Different brands and different models of microscopes position the key parts differently.
When you first sit in front of a microscope, you should always take a second to find the key parts, especially the focus knobs, the condenser adjustment knob (if present), and the stage control knobs. When viewing a specimen, your eyes will be at the eyepieces, and if you grab the wrong knob by accident, you can lose your image at best, and damage the microscope at worst. Don’t assume you remember where the key knobs are. You may have a different microscope than last time.
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