"Sine ball" in a project

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Subject Author Date
"Sine ball" in a project spamTHISbrp 05-02-2008
Posted by Jon Elson on May 2, 2008, 10:37 pm
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Jeff Wisnia wrote:
>>>
>>> http://www.tatjavanvark.nl/harmonium/

> Beautifull machining though isn't it? She(?) must be one in a gadzillion.
Holy **it! This lady has WAYYYY too much time on her hands!
Some beautiful machining, both the artsy stuff and the technical
work. The one with the inertial nav platform is really neat,
shows somebody moving the platform by hand and the
gyro-stabilized platform holding position in reference to the
universe. Even shows it doing a quick flip when it got near to
a gimbal lock.

There is a credit line at the bottom of the home page that says
the beautiful contraptions were made by Mrs. Tatjana van Vark.
There is a white-haired woman seen from the back in the
"Navigation and Bombing System" section. You have to see
"Overview 1" of that to see what a CONTRAPTION she's built in
her house!

Under Oscilloscopes, it notes Tatjana was born in 1944, she
built her first oscilloscope in 1958. She's definitely got me
beat by nearly a decade (of course, she got a head start, too.)

Jon

Posted by William Noble on May 3, 2008, 12:49 am
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how about this page, reached through an odd series of links from the page
below

http://www.dself.dsl.pipex.com/ampins/failproj/failproj.htm#fail1

















> Jeff Wisnia wrote:
>>>>
>>>> http://www.tatjavanvark.nl/harmonium/
>
>> Beautifull machining though isn't it? She(?) must be one in a gadzillion.
> Holy **it! This lady has WAYYYY too much time on her hands!
> Some beautiful machining, both the artsy stuff and the technical work.
> The one with the inertial nav platform is really neat, shows somebody
> moving the platform by hand and the gyro-stabilized platform holding
> position in reference to the universe. Even shows it doing a quick flip
> when it got near to a gimbal lock.
>
> There is a credit line at the bottom of the home page that says the
> beautiful contraptions were made by Mrs. Tatjana van Vark.
> There is a white-haired woman seen from the back in the "Navigation and
> Bombing System" section. You have to see "Overview 1" of that to see what
> a CONTRAPTION she's built in her house!
>
> Under Oscilloscopes, it notes Tatjana was born in 1944, she built her
> first oscilloscope in 1958. She's definitely got me beat by nearly a
> decade (of course, she got a head start, too.)
>
> Jon


** Posted from http://www.teranews.com **

Posted by Jon Elson on May 3, 2008, 1:05 am
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Jeff Wisnia wrote:
> Yeah, the olde "ball and disk integrators" I remember seeing gathering
> dust in the corners of some labs when I was in college.
>
> I think they were WWII relics from mechanical analog computers used for
> weapons aiming or something similar.
>
> Beautifull machining though isn't it? She(?) must be one in a gadzillion.
>
> Jeff
>
Doing a bit more digging, here's some info about her, and
pictures of her shop!

http://craftsmanshipmuseum.com/vanVark.htm

Jon

Posted by Jim Stewart on May 2, 2008, 4:40 pm
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spamTHISbrp@yahoo.com wrote:
> I figured since this uses a ball-bearing to generate sine waves
> (mechanisms like that have been seen here now and then), this would
> have some interest:
>
> http://www.tatjavanvark.nl/harmonium/

It has some resemblance to the guidance
computer in an old Pershing I missile.


Posted by Jon Elson on May 3, 2008, 12:57 am
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Jim Stewart wrote:
> spamTHISbrp@yahoo.com wrote:
>
>> I figured since this uses a ball-bearing to generate sine waves
>> (mechanisms like that have been seen here now and then), this would
>> have some interest:
>>
>> http://www.tatjavanvark.nl/harmonium/
>
>
> It has some resemblance to the guidance
> computer in an old Pershing I missile.
>
Umm, yeah! She's built one of those, too. See "Inertial
Navigator Platform", and check out the video of her picking up
the stable platform and moving it around while it is running.
Extremely cool!

Jon

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