Popular Scientific Recreations in Natural Philosophy Astronomy Geology Chemis
Popular Scientific Recreations in Natural Philosophy Astronomy Geology Chemis
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In our eReader you can find the full English version of the book. Read Popular Scientific Recreations in Natural Philosophy Astronomy Geology Chemis 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 Popular Scientific Recreations in Natural Philosophy Astronomy Geology Chemis
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To quickly assess the difficulty of the text, read a short excerpt:
c Fig. 503. Right angles.
CHAPTER XXXIV. ANGLES AND MEASUREMENT OF ANGLES.
THE QUADRANT TRANSIT INSTRUMENT CLOCKS STELLAR TIME SOLAR TIME " MEAN " TIME.
WE must say a few words respecting the various instruments and aids to astronomical observation before proceeding, for astronomy requires very accurate calculations; and though we do not propose to be very scientific in our descriptions, some little idea of the manner in which obsrvations may be made is necessary. The first thing to see about i...s the ANGLE.
Suppose we draw four lines on a piece of paper, ab and cd. These intersect at a point, m. We have then four spaces marked out, and called angles. The four angles are in the diagram all the same size, and are termed right angles, and the lines containing them are perpendicular to each other.
But by altering the position of the lines (see fig. 504), we have two pairs of angles quite different from right angles ; one angle, a' m c' ', is smaller, while a m d' is much larger than the right angle.
What to read after Popular Scientific Recreations in Natural Philosophy Astronomy Geology Chemis?
You can find similar books in the "Read Also" column, or choose other free books by Gaston Tissandier to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
c Fig. 503. Right angles.
CHAPTER XXXIV. ANGLES AND MEASUREMENT OF ANGLES.
THE QUADRANT TRANSIT INSTRUMENT CLOCKS STELLAR TIME SOLAR TIME " MEAN " TIME.
WE must say a few words respecting the various instruments and aids to astronomical observation before proceeding, for astronomy requires very accurate calculations; and though we do not propose to be very scientific in our descriptions, some little idea of the manner in which obsrvations may be made is necessary. The first thing to see about i...s the ANGLE.
Suppose we draw four lines on a piece of paper, ab and cd. These intersect at a point, m. We have then four spaces marked out, and called angles. The four angles are in the diagram all the same size, and are termed right angles, and the lines containing them are perpendicular to each other.
But by altering the position of the lines (see fig. 504), we have two pairs of angles quite different from right angles ; one angle, a' m c' ', is smaller, while a m d' is much larger than the right angle.
What to read after Popular Scientific Recreations in Natural Philosophy Astronomy Geology Chemis?
You can find similar books in the "Read Also" column, or choose other free books by Gaston Tissandier to read onlineMoreLess
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