Elements of Acoustics, Light, And Heat
Elements of Acoustics, Light, And Heat
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In our eReader you can find the full English version of the book. Read Elements of Acoustics, Light, And Heat Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elements of Acoustics, Light, And Heat
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57 to the size of the object, as the distance A' does toOA.
Fig. 47.
If the oliject be placed between tho lens and the principal focun (fig. 48), a uiii/jniilicd lOid erect image will Fig. 48 be formed. Then, of course, the image is virtual.
an arrangement constitutes the simple microscope.
Such 63. Formation of an Image by a Double Concave Lens. — ^We have seen that a double convex lens may give either a real or a virtual image, according to the distance Digitized by VjOOQlC 58 tilGHT.
of the ...object. A double concave lens gives only a virtual image at all distances. Let A B be the object (fig. 48), F C the principal axis, F the principal focus. The rays from A B, after traversing the lens, are divergent, and enter the eye as if they came from a real object at A' B', that is, there will be an image of A B seen at A' B', between the lens and the principal focus. That image is erect and smaller than the object.
54. Camera Obscura. — ^This instrument is represented Boctionally in fig.
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To quickly assess the difficulty of the text, read a short excerpt:
57 to the size of the object, as the distance A' does toOA.
Fig. 47.
If the oliject be placed between tho lens and the principal focun (fig. 48), a uiii/jniilicd lOid erect image will Fig. 48 be formed. Then, of course, the image is virtual.
an arrangement constitutes the simple microscope.
Such 63. Formation of an Image by a Double Concave Lens. — ^We have seen that a double convex lens may give either a real or a virtual image, according to the distance Digitized by VjOOQlC 58 tilGHT.
of the ...object. A double concave lens gives only a virtual image at all distances. Let A B be the object (fig. 48), F C the principal axis, F the principal focus. The rays from A B, after traversing the lens, are divergent, and enter the eye as if they came from a real object at A' B', that is, there will be an image of A B seen at A' B', between the lens and the principal focus. That image is erect and smaller than the object.
54. Camera Obscura. — ^This instrument is represented Boctionally in fig.
What to read after Elements of Acoustics, Light, And Heat?
You can find similar books in the "Read Also" column, or choose other free books by William Lees to read onlineMoreLess
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