Fig 18 on page 27 is easier to use to explain how the graphs work.
Another way to picture this…
You could picture these graphs representing a “movie” about the movements of a dot.
The key feature about a movie is that it changes over time.
This movie would be of a dot moving around in a circle. The dot would go around the circle once every 4 seconds in this case.
Instead of drawing a bunch of graphs or frames in the movie with the dot in a different place in each graph or frame, this is like all the graphs stacked on top of each other, so that the verticle axis t represents time.
Man, this is hard to get across verbally.
I may resort to making a little animation pretty soon.
Let me start with the bottom line, that is line that would be traced in the x and y axis by a dot moving from the bottom left to top right.
If you add time as a vertical coordinate, the dot would move from the bottom left to the upper right AND be going vertically upward at the same time. That is the top inside line. The 1,2,3,4 numbers do represent time in seconds.
If you saw his stuff from the beginning, you would probably drop that theory… He is actually now doing physics homework on my request (and lots of it) so he can ask intelligent questions in the future.
BTW, BZ… probably should start another thread to ask these questions in.
I have read it all. What I am saying is it could be a very subtle and well thought out plan. But then, he is doing his own homework, so the whole thing kinda falls appart.
Well, this has been quite a ride! ScottH, I forgive you for dragging my flame into the Coleman lantern of ignorance eradication. There is one item of unfinished business left, however:
“Superfluous” comes from Latin and means “overflowing,” in a “my cup runneth over” sense. The proper usage does overlap with “unnecessary,” but in the sense of exceeding what is necessary, rather than being both unnecessary and extraneous. This is not to say that “superfluous” just means “too much”; rather, it means that when used as a substitute for “unnecessary,” it should also carry the sense of “excessive” and not the sense of “extraneous.” For example, “The recent Star Wars movies contain so many CG characters that the real actors seem superfluous.”