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Why is it necessary to be able to focus at different depths using a compound light microscope?
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What is the difference between a dissecting microscope and a regular microscope?
Microscopes are used both in classrooms and in making important evaluations in medical laboratories and other microtechnologies. The different types of microscopes are designed for these different uses, and therefore will vary based on their resolution, magnification, depth of field, field of view, illumination method, degree of automation, and type of image they produce. There are essentially three categories of microscopes: electron, confocal, and compound. Electron microscopes are extremely sophisticated types of magnification devices. These are used in archaeology, medicine, and geology to look at surfaces and layers of objecs such as organs and rocks. Instead of using light, these devices point a stream of electrons at the specimen and attached computers analyze how the electrons are scattered by the material. The specimen must be suspended within a vacuum chamber. With transmission electron microscopes, a scientist gets a view of 2-D slices of the object at different depths. Of course, with such powerful instruments, both the degree of magnification and the resolution, or sharpness of the image, are very high. Scanning electron microscopes are slightly different in that they scan a gold-plated specimen to give a 3-D view of the surface of an object. This view is in black and white, yet gives an amazing picture of, for example, the minute hills and valleys of a dinosaur bone. A confocal microscope is a step down from the previous types. It uses a laser beam to illuminate a specimen whose image is then digitally enhanced for viewing on a computer monitor. The specimen is often dyed a bright color so the laser gives a more contrasting image. It is mounted on a glass slide just like in high school biology. Confocal microscopes are controlled automatically, and motorized mirrors help with auto-focus. Finally, there are the simplest types of microscopes found in classrooms across the world: compound microscopes. These are entirely operated by hand and use the ordinary ambient light from the sun or a light bulb to illuminate the specimen. Whatever you want to look at is mounted between two glass slides and clipped beneath the main lens. You use a dial to focus the image. These tools use a simple series of magnifying lenses and mirrors to bring the image up to an eyepiece, much like a telescope. Compound microscopes are mostly used in biology. They give a 2-D slice of an object, yet can attain a high enough magnification to see parts of eukaryotic cells, a hair strand, or pond scum. Unfortunately, they do not have excellent resolution, so the image may be blurry. On the other hand, stereoscopic microscopes, as the name implies, provide a 3-D picture of bisected items, like muscle tissue or an organ. In this case, magnification is poor, so you can't make out separate cells, but resolution is much improved.
Are oceans all the same temperature?
Of course not! Water that is just about to boil and turn to steam is at 212°. Water that is just about to freeze and turn to ice is at 32°. Any other water can be at any temperature in between those.
How does bathyscaphe work?
The bathyscaphe works by turning on its engine and it dives into the water and a lot of air is trapped inside it so it swims to the bottom of the sea/ocean. The pressure at the bottom of the sea/ocean is enough to squish a human.
What is the significance of the seed drill?
It allowed farmers to sow seeds in well-spaced rows at specific depths. A larger share of the seeds took root, boosting crop yields.
Do land surfaces of earth heat more rapidly than water surfaces?
Because sunlight penetrates to greater depths in land than in water.Land is dry, but water washes up onto water surfaces making it wet.
Why is it necessary to be able to focus a specimen at different depths on the microscope?
because the subject may have different charactreistics at different depths
Why it is necessary to be able to focus on different depths on the microscope?
Each depth will show different parts of whatever you are looking at on the microscope. The focus improves when using the right depth and magnification.
Where do fish breed in the sea?
Different species breed in different areas and at different depths.
What is the benefit of using a laser scanning confocal microscope?
There are many benefits associated with using a laser scanning confocal microscope. The main advantage is to obtain pictures one would not normally be able to receive at such depths.
How does a fish swim to different depths?
with the lateral fins
What would i find on a contor map?
different heights and depths
How do oceanographers measure the different densities out in the open ocean?
By Bringing up samples at different depths.
What is bit depth?
There are a number of different depths for a number of different bits. The depth needed depends on the project.
What is water temperature at different depths?
hot because when its cold it turn hot
Is soil different at different depths below the surface?
Yes. That is so because of the: color materials (minerals) and organisms.
What is the job outlook for an oceanographer?
going on a dive to collect different samples of ocean water at different depths
How does inflating and deflating help a fish?
It helps so the fish can stay at different depths.....
