The Microscope And Some Hints On How to Use It
The Microscope And Some Hints On How to Use It
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To quickly assess the difficulty of the text, read a short excerpt:
Hemispherical front lens with meniscus and two positive doublets Distance between doublets 14-30 mm All lenses in close proximity From the Table it will be seen that the optical tube-length of the objectives specified therein varies within the limits of 75 and 187 mm.
It should be noted that Objective 1 a, by reason of its peculiar formula, has the same magnification as Objective 1, despite the fact that its focal length is much shorter; on the other hand, Objective la has the same focal length... as Objective 2, yet the initial magni- fication of the latter is nearly twice as high as that of the formei".
The initial magnification of the eyepieces is determined in a similar manner to that of the compound microscope (p. 10). Hi this case the image formed by the objective plays the same part as did the object in the compound microscope. Since the image is situated in the focal plane of the eyepiece the emerging pencils consist of parallel rays, which are readily brought to a focus on the retina of the eye.
What to read after The Microscope And Some Hints On How to Use It?
You can find similar books in the "Read Also" column, or choose other free books by Harzverein Fr Geschichte Und Altertumskunde to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Hemispherical front lens with meniscus and two positive doublets Distance between doublets 14-30 mm All lenses in close proximity From the Table it will be seen that the optical tube-length of the objectives specified therein varies within the limits of 75 and 187 mm.
It should be noted that Objective 1 a, by reason of its peculiar formula, has the same magnification as Objective 1, despite the fact that its focal length is much shorter; on the other hand, Objective la has the same focal length... as Objective 2, yet the initial magni- fication of the latter is nearly twice as high as that of the formei".
The initial magnification of the eyepieces is determined in a similar manner to that of the compound microscope (p. 10). Hi this case the image formed by the objective plays the same part as did the object in the compound microscope. Since the image is situated in the focal plane of the eyepiece the emerging pencils consist of parallel rays, which are readily brought to a focus on the retina of the eye.
What to read after The Microscope And Some Hints On How to Use It?
You can find similar books in the "Read Also" column, or choose other free books by Harzverein Fr Geschichte Und Altertumskunde to read onlineMoreLess
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