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What size focal spot is used for magnification views in mammography?
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The magnification of a telescope is changed by changing the what?
The magnification of a telescope is the ratio of the effective focal length of the objective to the focal length of the eyepiece. For example, a small telescope's objective may have a focal length of 800mm. When an eyepiece with a focal length of 25mm is used, the magnification is 800/25 = 32. The term "effective focal length" refers to the focal length of the objective as affected by any "focal extender". Many telescopes are designed to have a short total size, but high power, by "folding" the optical path. A mirror-type objective with a focal length of perhaps 800mm is coupled with a smaller curved mirror that intercepts the last 200mm and extends it to 800mm, a 4x extension, so that the effective focal length of that objective is 3200mm. Use that with a 25mm eyepiece and the magnification is 3200/25 = 128. By the way, if a telescope is smaller than you are, it is seldom much use to view using a magnification greater than 50 to 100. Most objects are best viewed at relatively low powers such as 30 or so.
What are the magnifications on the objective lenses?
There are many different microscopes currently on the market. Most of these microscopes come with different levels of magnification so that you can view an object in different ways. It is important to make sure the microscope you choose to use will have the correct maginfication you need.
Formula for finding the magnification of a cell?
Its M = D/A M is the Magnification D is the Drawing's Size A is the Actual Size so to find the actual size we replace A with X etc...
What is the ratio of the size of the image seen with the microscope to the actual size of the object?
There is no constant ratio for image size to object size It depends on, 1. Image size 2. Sensor specifications (ex: Focal length of the camera) 3. Camera to Object distance 4. Acquisition angle (Theta) 5. Light focusing 6. Need some Known object values for determine unknown object size etc...
What are the advantages of knowing the diameter of the field of view at a given magnification?
You can use that to estimate the size of objects that you are observing.
The magnification of a telescope is changed by changing the?
The magnification of a telescope is the ratio of the effective focal length of the objective to the focal length of the eyepiece. For example, a small telescope's objective may have a focal length of 800mm. When an eyepiece with a focal length of 25mm is used, the magnification is 800/25 = 32. The term "effective focal length" refers to the focal length of the objective as affected by any "focal extender". Many telescopes are designed to have a short total size, but high power, by "folding" the optical path. A mirror-type objective with a focal length of perhaps 800mm is coupled with a smaller curved mirror that intercepts the last 200mm and extends it to 800mm, a 4x extension, so that the effective focal length of that objective is 3200mm. Use that with a 25mm eyepiece and the magnification is 3200/25 = 128. By the way, if a telescope is smaller than you are, it is seldom much use to view using a magnification greater than 50 to 100. Most objects are best viewed at relatively low powers such as 30 or so.
The magnification of a telescope is changed by changing the what?
The magnification of a telescope is the ratio of the effective focal length of the objective to the focal length of the eyepiece. For example, a small telescope's objective may have a focal length of 800mm. When an eyepiece with a focal length of 25mm is used, the magnification is 800/25 = 32. The term "effective focal length" refers to the focal length of the objective as affected by any "focal extender". Many telescopes are designed to have a short total size, but high power, by "folding" the optical path. A mirror-type objective with a focal length of perhaps 800mm is coupled with a smaller curved mirror that intercepts the last 200mm and extends it to 800mm, a 4x extension, so that the effective focal length of that objective is 3200mm. Use that with a 25mm eyepiece and the magnification is 3200/25 = 128. By the way, if a telescope is smaller than you are, it is seldom much use to view using a magnification greater than 50 to 100. Most objects are best viewed at relatively low powers such as 30 or so.
What is the relationship of focal spot blur and geometric unsharpness?
The finite size of the focal spot results in divergence of the beam beyond the magnified image of the object (creating an area called the penumbra). This is termed focal spot or geometric blurring and results in reduced image resolution. In the absence of magnification (that is, the image is adjacent to the receptor) there is no focal spot blurring.
How do you find the power of magnification?
Magnification = Size drawn / Actual size
What are the magnifications on the objective lenses?
There are many different microscopes currently on the market. Most of these microscopes come with different levels of magnification so that you can view an object in different ways. It is important to make sure the microscope you choose to use will have the correct maginfication you need.
What is the increase of an objects apparent size by using lenses or mirrors?
magnification
Microscopic field size increase with higher magnification?
Magnification is related because as magnification increases, the depth of field decreases.
What is the relationship between the size of the field of view and the magnification?
As you increase the magnification, the field of view decreases.
What is the relationship between the size of the field of view and magnification?
As you increase the magnification, the field of view decreases.
Formula for finding the magnification of a cell?
Its M = D/A M is the Magnification D is the Drawing's Size A is the Actual Size so to find the actual size we replace A with X etc...
A change in the size of an image compared with the size of an object?
This is known as MAGNIFICATION
Relationship between size ratio and magnification?
size ratio is basiclly magnification.... just on a higher level. trust me im a scientist i know alot about this stuff :)
