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What is composition of microscope?
A microscope typically consists of an objective lens, an eyepiece or ocular lens, a stage to hold the sample, a light source to illuminate the sample, and focusing mechanisms to adjust the position of the lenses for clear magnification. Some microscopes may also have additional features such as a condenser lens, diaphragm, and mechanical stage for precise sample movement.
Percentage of carbon in each coal stage?
The percentage of carbon in coal varies depending on the stage of coal: Lignite: contains around 25-35% carbon Sub-bituminous: contains around 35-45% carbon Bituminous: contains around 45-86% carbon Anthracite: contains around 86-97% carbon
What is 4-major parts of microscope?
1. Mechanical Parts- refer to the parts that serve as the framework of the apparatus.2.Illuminating or optical parts- produce light entering he microscope3.Magnifyig Parts- enlarge or magnify the object
How does a compound microscope work?
1)lower the body tube by using the coarse adjustment 2)check the distance between objectives and stage.(at least 1 cm.) 3)look through the eye piece@set the mirror to gather enough light.put the slide on stage.
Is peat the early stage in the formation of coal?
Yes, peat is the initial stage in the formation of coal. It is formed from partially decomposed plant material in waterlogged conditions. As peat undergoes further geological processes like burial and compaction, it can transform into lignite, then into bituminous coal, and eventually into anthracite coal.
What are the basic parts of the microcope?
The basic parts of a microscope include the objective lens, ocular lens, stage, light source, and focus knobs. The objective lens is responsible for magnifying the specimen, while the ocular lens further magnifies the image for viewing. The stage is where the specimen is placed, and the light source illuminates the specimen. Focus knobs are used to adjust the clarity and sharpness of the image.
How do the graduations differ between ocular and stage micrometers?
Ocular micrometers are placed in the eyepiece of a microscope and have markings that are viewed alongside the specimen to measure its size. Stage micrometers are placed on the stage of a microscope and have known, predefined distances between markings used as a reference for calibrating the ocular micrometer. The graduations on an ocular micrometer may appear larger or smaller than those on a stage micrometer due to differences in magnification between the two.
What is the difference between stage micrometer and ocular micrometer?
Ocular micrometers are see-through disks with a ruler in them that go in the eypiece of a microscope to measure what you are seeing. Stage micrometers are put on the stage/view platform of the microscope, so instead of putting them in the eyepiece you are putting them right next to the object you are looking at in the microscope.
What is the knob that moves the sage slightly to sharpen the image on a microscope?
The knob that moves the stage slightly to sharpen the image on a microscope is called the fine focus knob. It allows for precise adjustments to the focus of the specimen by moving the stage up and down in very small increments.
Describe the relationship between what you see through the eyepiece and what you see on the stage?
What you see through the eyepiece is a magnified view of the specimen on the stage. The eyepiece magnifies the image produced by the objective lens, allowing for a closer, more detailed observation of the specimen on the stage.
What are the functions of the base and the arm are of the microscope?
The base supports the stage and the arm; the arm supports the viewing ocular.
What happens to an image when viewed under the microscope as compared to how it looks on the stage?
When viewed under the microscope, an image appears magnified compared to how it looks on the stage. The microscope allows you to see fine details and structures that are not visible to the naked eye. Additionally, the image may appear clearer and more defined when viewed through the microscope's lenses.
What is the function of microscope parts?
The eyepiece or ocular lens magnifies the image produced by the objective lens. The objective lens gathers light from the specimen and forms an enlarged image in the body tube. The stage is where the specimen is placed for observation, and it can be moved horizontally or vertically for focusing. The diaphragm controls the amount of light passing through the specimen.
What is the part of microscope that connects the objectives and ocular lenses to the base?
The main parts of the microscope are the eye-pieces, microscope tube, nose-piece, objective, mechanical stage, condenser, coarse and fine focusingknobs, and light source.
Why is it necessary to calibrate to ocular micrometer with each objective?
The ocular micrometer is inside the ocular lens, it will not change size when the objectives are changed. Therefore, each objective lens must be calibrated separately. Ocular micrometers have no units on them - they are like a ruler with marks but no numbers. In order to use one to measure something under a microscope, you must assign numbers to the marks. This is done by looking through your OCULAR micrometer at a STAGE micrometer mounted on a slide. The stage micrometer is just a ruler with fixed known distances, so you can use it to tell how far apart marks are on the ocular micrometer. This has to be done because the marks on the ocular micrometer are different distances apart depending on the magnification used on the microscope. It must be calibrated for each objective.
What do the stage on the microscope do?
The stage on a microscope holds the slide in place and allows for precise movement of the sample being viewed. It can be adjusted in height and position to help focus the image and navigate different areas of the slide.
Why does the stage of a microscope have a hole inside it?
The hole in the stage of a microscope allows light to pass through the specimen, making it possible to view the specimen under high magnification. The light source from below illuminates the specimen through this hole, improving visibility and image clarity. The hole also allows for the insertion of specialized accessories, such as condensers or filters, to enhance the quality of the image.
