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Spikylink 07-01-10 - The Slide Rule Guy

 
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Negation



Joined: 05 Feb 2006
Posts: 1456
Location: Finland

PostPosted: Wed Jan 10, 2007 12:35 am    Post subject: Spikylink 07-01-10 - The Slide Rule Guy Reply with quote

The linked site has really interesting information. I liked especially the projection slide rule (http://www.slideruleguy.com/projection_sr.htm) rocks (or rather rules). One can just marvel the level of precision you need to manufacture that.

I have one slide rule, but that's of course a lot simpler model (157/80 Castell) and I'm not really using it for anything. But I just had to have one for the sake of owning one ;)

Does anyone else have such devices and know how to use them? I can do basic calculations, but more advanced stuff is beyond my skills without manul (I do have one, I just need to check it everytime I need more complex things).
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Rainaari



Joined: 09 Oct 2006
Posts: 603
Location: Germany

PostPosted: Wed Jan 10, 2007 1:46 am    Post subject: Reply with quote

No, I'm glad I did not.

I grew up with electronic calculators and still like my TI 92 which can solve symbolic equations. Although i dont have much need for that now.

I adore good mechanical work (like in stirling motors, clockwork or some of the machinery we have at work) but i never got a hang of slide rulers. Not enough action, i think ,)
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Negation



Joined: 05 Feb 2006
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Location: Finland

PostPosted: Wed Jan 10, 2007 6:44 pm    Post subject: Reply with quote

TI 92 rocks. I had the upgraded model with more memory and additional firmware. Granted, it's a bit big compared to ti-89, but proper qwerty-keyboard and big screens were really big plus. I sold mine some time ago, since I really didn't use it anymore.

I think that the thing that fascinates me about slide rules is that they are relatively simple mechanically, but yet you can use them to perform quite complex calculations. And it looks sort of magic when you slide the rule back and forth for a while and then announce the answer ;)

Precision mechanics are fascinating too. As a kid I could stare working clock mechanism for long time, just admiring how everything works so perfectly.
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Kriegel



Joined: 11 Dec 2006
Posts: 336
Location: Elyon's waters

PostPosted: Wed Jan 10, 2007 7:44 pm    Post subject: Reply with quote

I don't have a slide rule, and to be honest I wish I knew how to use one.

Six sig figs...

...

Wow.

My TI-83 has seen a lot, though. Won't even stay in its case anymore without sliding out. But you can drop them onto a tile floor and they won't break! I've used a TI-92 once, when I couldn't find my calculator. The teacher didn't really want me to use it, though. I didn't have a clue what to do with the QWERTY keyboard.

But it doesn't really matter what kind of calculator I have because the college won't let you use them.
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Negation



Joined: 05 Feb 2006
Posts: 1456
Location: Finland

PostPosted: Thu Jan 11, 2007 12:43 am    Post subject: Reply with quote

Kriegel wrote:
I don't have a slide rule, and to be honest I wish I knew how to use one.


You could always take a look at virtual slide rules, like http://www.antiquark.com/sliderule/sim/, first. That's what I did when I didn't have my own. Those even come with instructions how to use them for calculations.

Kriegel wrote:
My TI-83 has seen a lot, though. Won't even stay in its case anymore without sliding out. But you can drop them onto a tile floor and they won't break! I've used a TI-92 once, when I couldn't find my calculator. The teacher didn't really want me to use it, though. I didn't have a clue what to do with the QWERTY keyboard.

But it doesn't really matter what kind of calculator I have because the college won't let you use them.


Yup, TI-83 is a trusty calculator and has really nice range of features. One of the coolest thing on those calculators is the possibility to program your own functionality. It's handy when you have long sequence of calculations that you need to perform with different parameters and draw conclusion from the results.
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