LOGO-L> Playing with Logo

["Dale R. Reed" <dale-reed@worldnet.att.net>]

I am sending this to you folks for three reasons.

1)  To demonstrate some fun "engineering" kind of things that I have
been experimenting with involving cylindrical "waves."  The attached gif
is a crude model of the broadside pattern of an array of 11 omni(well
actually only half omni but I could of used 360 instead of 180 if I
wanted to)sources.  Kinda-like 11 rocks dropped in the water or the top
view of monopole antennas or whatever.  Hey with Logo we can construct
our own worlds right?

2)  To send out into cyberspace, to many people for the first time, a
gif file.

3)  To ask you why another fellow(my Mom's husband) that I already sent
this to can not see it.  He is using a Mackintosh and AOL if that makes
any difference. 

So will someone at least say that they received my pattern2.gif file and
it looks OK?  Looks great when I send it to myself.  But I am kinda
biased.  

I know it is not such great stuff but I did just take some photographs
of water dropping in my birdbath and the resulting interference(standing
waves) between the waves reflecting off the cylindrical rim and the
waves from the source are kind interesting and if I can figure out how
to...    Dale 

to pattern
ht pd
for [x -15 15 3 ] ~
   [setpos (list :x 0) setheading 0 ~
   setpc [0 0 0] bk 10 fd 10 setpc [0 0 250]  ~
setheading 90 pole]
gifsave "pattern2.gif
end

to pole
for[rad 0 200 5][arc 180 :rad ]
end
-- 
$  dale-reed@worldnet.att.net   Seattle, Washington U.S.A.  $