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What does the number on the side of the objective lens indicate?
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The parts and functions of the parts of a microscope?
Arm = supports top part of microscope Base = the part the microscope stands on Lens turret= a rotating support for the objective lenses objective lens or lenses are those closest to the object being viewed. Their degree of magnification is usually marked on the side of the lens, eg. 100x magnifies the object 100 times. The longer the lens, the greater its magnifying power. Eyepiece (or ocular lens) = This is the lens closest to the eye and its magnifying power is generally marked on the side. To determine the total magnifying power of a compound microscope, multiply the power of the ocular lens with the power of the objective lens. For example, a 10x ocular with a 100x objective would give a total magnification of 1000. A microscope may also have a binocular eyepiece with a lens for each eye. Stage Clip= holds the glass slide which contains a specimen to be viewed. Stage- holds the specimen. Coarse adjustment knob- makes large adjustments to the focus of the lenses. Fine adustment knob- makes small adjustments to the focus of the lenses Below the stage is located either a mirror or an electric light which directs light through the specimen on the stage.
Why would you always use the low-power objective lens to locate objects mounted on the slide first even if you want to observe them with the high power objective lens?
because it allows you to find the part of the slide you want to see, then you can zoom in by changing focus to see the frame in greater detail. if you don't start in low power it is extremely difficult to move around the slide
Why is 7x50 better than 7x35 binoculars?
The 7 is the magnification produced - it is a ratio of the focal lengths of the lens at the eyepiece and the front (objective) lens. The 50 is width of the objective lens - in millimetres.
What part of the microscope should you used to focus the image when using high power objective lens?
First of all, one should never call it high power, it is morecommonly called the "high objective", yet that is not what this question is asking. To answer the question: You use the fine adjustment knob. This knob should be located near the coarse adjustment knob, on the opposite side of the microscope (at the same height as the coarse adjustment knob), or even as a separate knob protruding from the coarse adjustment knob. The fine adjustment knob is smaller in size. You should never, ever use the coarse adjustment knob under the high objective, you could scratch the microscope slide, cover slip, high objective lens, or in a worst case scenario break the high objective lens.
How do you increase the magnification power of a telescope?
You need to rotate the lenses round to get the best magnification then use the wheels on the side to bring it into focus. If this does not meet your requirement's then you need a better microscope.
Why should you watch the objective lens from the side when changing the magnification?
Sometimes, if the stage is set high enough, the objective lens can hit or scratch the slide when it's changed, because each objective lens is a different length. From the back of the microscope, you cannot see if the lens is going to hit the slide or not, and run the risk of disturbing your sample. This problem can be prevented by looking from the side and stopping if it looks like the lens is going to hit the slide.
Why should you watch from the side before you lower the objective of your microscope?
Sometimes, if the stage is set high enough, the objective lens can hit or scratch the slide when it's changed, because each objective lens is a different length. From the back of the microscope, you cannot see if the lens is going to hit the slide or not, and run the risk of disturbing your sample. This problem can be prevented by looking from the side and stopping if it looks like the lens is going to hit the slide. Watching from the side also helps to know if it is too low, or just in the right distance.
Why do you have to watch from the side when changing objectives?
Sometimes, if the stage is set high enough, the objective lens can hit or scratch the slide when it's changed, because each objective lens is a different length. From the back of the microscope, you cannot see if the lens is going to hit the slide or not, and run the risk of disturbing your sample. This problem can be prevented by looking from the side and stopping if it looks like the lens is going to hit the slide.
Why do you have to watch from side when changing objectives?
Sometimes, if the stage is set high enough, the objective lens can hit or scratch the slide when it's changed, because each objective lens is a different length. From the back of the microscope, you cannot see if the lens is going to hit the slide or not, and run the risk of disturbing your sample. This problem can be prevented by looking from the side and stopping if it looks like the lens is going to hit the slide.
Why do you have to watch from the side when changing objectives of the microscope?
Sometimes, if the stage is set high enough, the objective lens can hit or scratch the slide when it's changed, because each objective lens is a different length. From the back of the microscope, you cannot see if the lens is going to hit the slide or not, and run the risk of disturbing your sample. This problem can be prevented by looking from the side and stopping if it looks like the lens is going to hit the slide.
What part of the microscope maintains the correct distance between the eyepiece and the objective lens?
There's a knob on The side that allows you to adjust the proper height of the lense
Why must you be careful when you are focusing with a high power lens?
When you are focusing the high power objective lens, you might damage the lens if you adjust it too closely and/or damage the object/specimen you are observing. To avoid this, look to the side of the microscope when adjusting the coarse knob to make sure the high power objective lens isn't too close.:)
What are the differences between convex lens and biconvex lens?
A convex lens has one flat side and one curved side --> |) A biconvex lens has both sides curved --> ()
The parts and functions of the parts of a microscope?
Arm = supports top part of microscope Base = the part the microscope stands on Lens turret= a rotating support for the objective lenses objective lens or lenses are those closest to the object being viewed. Their degree of magnification is usually marked on the side of the lens, eg. 100x magnifies the object 100 times. The longer the lens, the greater its magnifying power. Eyepiece (or ocular lens) = This is the lens closest to the eye and its magnifying power is generally marked on the side. To determine the total magnifying power of a compound microscope, multiply the power of the ocular lens with the power of the objective lens. For example, a 10x ocular with a 100x objective would give a total magnification of 1000. A microscope may also have a binocular eyepiece with a lens for each eye. Stage Clip= holds the glass slide which contains a specimen to be viewed. Stage- holds the specimen. Coarse adjustment knob- makes large adjustments to the focus of the lenses. Fine adustment knob- makes small adjustments to the focus of the lenses Below the stage is located either a mirror or an electric light which directs light through the specimen on the stage.
Why must the course adjustment knob be turned forward only while watching from the side?
The course adjustment knob must be turned forward only while watching from the side to ensure that the microscope's objective lens moves closer to the specimen. This allows for focusing on the specimen and achieving a clear image. Turning the knob in any other direction may result in moving the objective lens away from the specimen, leading to an out-of-focus image.
Briefly describe the necessary steps for observing a slide at low power the compound light microscope?
Center the slide on the stage. Looking from the side, decrease the distance between the slide and the objective lens until the lens comes to a stop. Looking throught the ocukar lens(es), use the coarse-adjustment knob to increase the distance between the slide and the lens until the object comes into view.
Why would you always use the low-power objective lens to locate objects mounted on the slide first even if you want to observe them with the high power objective lens?
because it allows you to find the part of the slide you want to see, then you can zoom in by changing focus to see the frame in greater detail. if you don't start in low power it is extremely difficult to move around the slide
