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Are you suggesting that anything draw in AutoCAD has anything to do with the real world? When you start trying to represent the "Real World" in CAD you're in for a lot of trouble.
Will the line come back full circle in the real world? That depends on a lot of things. Firstly is the line "Draw" instantaneously. If not then the answer is NO. Any line draw on paper or on the ground is a line only in our reference frame. The direction the line was pointing when you began to draw it is very different form the direction of the line when you finish.
The earth rotates and revolves around the Sun. The Sun moves through the Galaxy and the Galaxy moves through the Universe. The Universe expands and may have other movements. If you plotted each point on the line you drew using a galaxy base coordinate system and allowed for the time it took to draw that line. The plotting would look like some looped out compound spiral. So if there's no instantaneous propagation it won't happen.
Allen
Will the line come back full circle in the real world? That depends on a lot of things. Firstly is the line "Draw" instantaneously. If not then the answer is NO. Any line draw on paper or on the ground is a line only in our reference frame. The direction the line was pointing when you began to draw it is very different form the direction of the line when you finish.
The earth rotates and revolves around the Sun. The Sun moves through the Galaxy and the Galaxy moves through the Universe. The Universe expands and may have other movements. If you plotted each point on the line you drew using a galaxy base coordinate system and allowed for the time it took to draw that line. The plotting would look like some looped out compound spiral. So if there's no instantaneous propagation it won't happen.
Allen
Allen Jessup
CAD Manager - Designer
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If it is drawn vertically it shows up in China.
GrantsPirate
Piping and Mech. Designer
Always save a copy of the drawing before trying anything suggested here.
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If something I wrote can be interpreted two ways, and one of the ways makes you sad or angry, I meant the other one.
If you're working in a projection like a Transverse Mercator the line may intersect the earth surface at 2 points. But all terrestrial reference frames treat the earth as if it were stationary. So each case is valid for only one T.
Are AutoCAD lines warped by space-time? In the real world the only thing that might match the one dimensionality of a line may be a rotating singularity (Black Hole). So if all AutoCAD lines represent Black Holes that would explain some of the designs I've seen.
Allen
Are AutoCAD lines warped by space-time? In the real world the only thing that might match the one dimensionality of a line may be a rotating singularity (Black Hole). So if all AutoCAD lines represent Black Holes that would explain some of the designs I've seen.
Allen
Allen Jessup
CAD Manager - Designer
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I was envisioning the line in the projection intersecting the Ellipsoid and possibly the earth's surface. Most places it would intersect the actual surface but in some instances the Ellipsoid is above the earth's surface. The line might or might not intersect the Geoid due to it's irregular shape.
Allen
Allen
Allen Jessup
CAD Manager - Designer
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