Descriptive Geometry
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In our eReader you can find the full English version of the book. Read Descriptive Geometry 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 Descriptive Geometry
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Place the line also in the position ad (a h d h, a v d") parallel to H, where a h d h (equals a v c v ) equals the true length of the line and makes with GL the angle, /?, which the line makes with V. Revolve this line about an axis through a perpendicular to V, by drawing the projections, K" and K h, of the arc in which d revolves.
The point b (b h, b v ), which determines the projections of the required line ab, is found at the intersection of the two paths of revolution J and A". Note that t...his point is independently determined in each projection; hence as a check on the work the projector b v b h should be perpendicular to GL.
CHAPTER IX SOME SIMPLE INTERSECTIONS — DEVELOPMENTS 84. Simple Intersections of Solids of Revolution. In generat- ing the surface of a solid of revolution, each point of the gener- ating line describes a circle which lies in a plane perpendicular to the axis, and whose center lies in the axis (§ 74). If the axis of the surface be placed perpendicular to H (or V), these circles will project on H (V) in their true shape and size, and on V (H) as horizontal straight lines which are the edge views of the planes containing the circles (§ 75).
What to read after Descriptive Geometry?
You can find similar books in the "Read Also" column, or choose other free books by Ervin Kenison to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Place the line also in the position ad (a h d h, a v d") parallel to H, where a h d h (equals a v c v ) equals the true length of the line and makes with GL the angle, /?, which the line makes with V. Revolve this line about an axis through a perpendicular to V, by drawing the projections, K" and K h, of the arc in which d revolves.
The point b (b h, b v ), which determines the projections of the required line ab, is found at the intersection of the two paths of revolution J and A". Note that t...his point is independently determined in each projection; hence as a check on the work the projector b v b h should be perpendicular to GL.
CHAPTER IX SOME SIMPLE INTERSECTIONS — DEVELOPMENTS 84. Simple Intersections of Solids of Revolution. In generat- ing the surface of a solid of revolution, each point of the gener- ating line describes a circle which lies in a plane perpendicular to the axis, and whose center lies in the axis (§ 74). If the axis of the surface be placed perpendicular to H (or V), these circles will project on H (V) in their true shape and size, and on V (H) as horizontal straight lines which are the edge views of the planes containing the circles (§ 75).
What to read after Descriptive Geometry?
You can find similar books in the "Read Also" column, or choose other free books by Ervin Kenison to read onlineMoreLess
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