Fernando
The rope is longer than the distance between the pegs x and y.
(I hope the characters / and \ work as forward and backward oblique on your
screen and you will need to look at this in a fixed width font I expect.)
Pick a point * which I shall draw nearer the end x and move so that
Sorry, but I have not been able to visualize this.
No matter how I look into it, I can't seen how it will
generate a perpendicular line. I see the pegs and cable
as follows:
+
W o=o E
+
Where do I pull the rope taut? I'd
Fritz Stumpges wrote:
Hi
Don't pull the rope too tight, leave a little slack. Now grab
the rope
anywhere near the middle and pull it snuggly to one side and mark the
spot.
Then holding the rope at the same spot move to the other side and repeat.
I
love the simple ideas people on this list come
Rudolph:
What a great idea! No math or plotting! This method also seems like it
would be very precise (If there is no stretch in the rope. A chain or cable
metal cable might be better than a rope for super precision).
John
Yes, yes yes! Laying out lines is really fun and healthy.
To derive
This year the Equinox will be on Sep 22 at 17:27 UT.
There is a useful link for this kind of data :
http://aa.usno.navy.mil/aa/data/docs/EarthSeasons.html
Best regards
Alberto Nicelli
Italy (45°28' N ; 7°52' E)
-Messaggio originale-
Da: Dave Bell [mailto:[EMAIL PROTECTED]
Inviato:
Sarah contributed:
somebody once said to me that if someone does not undestand you, you have
not explained well enough!
Or to take it a little further The pupil should exceed the master or
the master has failed
Now who said that?
Tony M.
Fernando,
Here is a small GIF to illustrate the concept. It
is a nice example of symmetry. The thick lines
represents the rope, and the little squares show
where it is gripped and marked.
Bill
Attachment converted: Macintosh HD:R-ANG.GIF (GIFf/JVWR) (0001BF30)
