[Squeakland] Weird Heading numbers
Mike Stramba
mstramba at sympatico.ca
Fri May 25 23:12:05 PDT 2007
>From: Paulo Drummond <ptdrumm at terra.com.br>
>To: squeakland at squeakland.org,
>Subject: Re: [Squeakland] Weird Heading numbers
>Date: Sat, 26 May 2007 01:21:16 -0300
>
>
>On May 25, 2007, at 11:57 PM, Mike Stramba wrote:
>
>>Compasses, GPS, Aircraft, Marine Vessels all use "real headings".
>
>Ok. Try explain to a 8-year child that 0 = 360.
You don't need to. There is no such thing as heading "0".
Headings go from 1 to 360.
>>
>>I've never heard of any other use for them (before playing with Etoys ;)
>>)
>
>It's Geometry, in its very roots. I bet starting with this negativity of
>angles, relativity of things, one who learned with this principles in mind
>can understand the real basic Geometry (Euclidian, Cartesian, Vector Space
>etc) much better, much earlier.
>
We're talking about *headings*, not *angles*. If we're not, then the
parameter should be re-named to "angles" :)
Anyway , I didn't realize that the scripts would respond to "190-360" and
internally correct / do the right thing. So I just need to figure out the
display/script thingy that Alan suggested.
It's also been "awhile" since I've been in school, but I've never heard of
East being referred to as 0 degrees !
By the time these kdis are adults, all the planes will be automated anyway
... or all the airlines will have gone bankrupt ;)
Mike
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