Slide Rules
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OK, from the previous post, How many here actually OWN a slide rule, and can you use them? (I have one, and yes, I can use it). Actually I am reminded of an old physics teacher who pointed out that the calculations regarding a particular experiment were fairly simple, and "Didn't require a bucket of water in which to cool the slide rules!"
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
I have one in my drawer. That and my abacus become my emergency backup computer. :) I show it to the young kids around here just to see their response.
SS => Qualified in Submarines "We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm". Winston Churchill
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I have one in my drawer. That and my abacus become my emergency backup computer. :) I show it to the young kids around here just to see their response.
SS => Qualified in Submarines "We sleep soundly in our beds because rough men stand ready in the night to visit violence on those who would do us harm". Winston Churchill
Jim (SS) wrote:
I show it to the young kids around here just to see their response.
One of disbelief I would imagine! :)
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
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Jim (SS) wrote:
I show it to the young kids around here just to see their response.
One of disbelief I would imagine! :)
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
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OK, from the previous post, How many here actually OWN a slide rule, and can you use them? (I have one, and yes, I can use it). Actually I am reminded of an old physics teacher who pointed out that the calculations regarding a particular experiment were fairly simple, and "Didn't require a bucket of water in which to cool the slide rules!"
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
I've got one in a drawer somewhere at my parent's house that my Dad gave me. He tried to explain how it worked, but I never really got my head around it. I keep meaning to get a decent abacus, and train myself to use it Chinese-style
Help me! I'm turning into a grapefruit! Buzzwords!
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OK, from the previous post, How many here actually OWN a slide rule, and can you use them? (I have one, and yes, I can use it). Actually I am reminded of an old physics teacher who pointed out that the calculations regarding a particular experiment were fairly simple, and "Didn't require a bucket of water in which to cool the slide rules!"
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
I've never owned one, but we learned how to use them in high school. I'd need to learn it again to use one today.
BDF People don't mind being mean; but they never want to be ridiculous. -- Moliere
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What a slide rule? Some sort of new design pattern? ;) Marc
Available for consulting and full time employment. Contact me. Interacx
Marc Clifton wrote:
What a slide rule?
An ingenious device that uses logarithms in order to let you add two numbers together. :zzz:
Luc Pattyn [Forum Guidelines] [My Articles]
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Marc Clifton wrote:
What a slide rule?
An ingenious device that uses logarithms in order to let you add two numbers together. :zzz:
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
Isn't it for multiplication and division rather than addition?
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Isn't it for multiplication and division rather than addition?
Yeah, that's what they teach, but when using the logarithmic scales properly, you really can do addition with it. Great invention, too bad non-sliding computers are taking over. :)
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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OK, from the previous post, How many here actually OWN a slide rule, and can you use them? (I have one, and yes, I can use it). Actually I am reminded of an old physics teacher who pointed out that the calculations regarding a particular experiment were fairly simple, and "Didn't require a bucket of water in which to cool the slide rules!"
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
I can use one but not for its intended use :mad:
Todd Smith
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Come off it grandad, I bet you used them! :-D
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
Beat me to it. I'll bet at one time Clifton had one on a belt holster.
Software Zen:
delete this; -
OK, from the previous post, How many here actually OWN a slide rule, and can you use them? (I have one, and yes, I can use it). Actually I am reminded of an old physics teacher who pointed out that the calculations regarding a particular experiment were fairly simple, and "Didn't require a bucket of water in which to cool the slide rules!"
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
I don't own one, but have used it in the past. March 99, calculator free month in advanced physics.
Today's lesson is brought to you by the word "niggardly". Remember kids, don't attribute to racism what can be explained by Scandinavian language roots. -- Robert Royall
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I just get a feeling that only people of 40 years plus will have/have used them!
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
I'll be 28 in a few months. I can multiply/divide on one. I never needed to use any of the other math features it provided.
Today's lesson is brought to you by the word "niggardly". Remember kids, don't attribute to racism what can be explained by Scandinavian language roots. -- Robert Royall
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Beat me to it. I'll bet at one time Clifton had one on a belt holster.
Software Zen:
delete this;on a belt holster which led to the phrase "when in doubt, whip it out" :-D
Steve _________________ I C(++) therefore I am
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on a belt holster which led to the phrase "when in doubt, whip it out" :-D
Steve _________________ I C(++) therefore I am
White short-sleeved shirt, glasses held together with tape, bragging about his big ten inch...
Software Zen:
delete this; -
I just get a feeling that only people of 40 years plus will have/have used them!
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
Not so much; my father never showed me how to use his, and I never saw him using it either. When we did logarithms on high school we used calculators.
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OK, from the previous post, How many here actually OWN a slide rule, and can you use them? (I have one, and yes, I can use it). Actually I am reminded of an old physics teacher who pointed out that the calculations regarding a particular experiment were fairly simple, and "Didn't require a bucket of water in which to cool the slide rules!"
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
I had one, in high school, for a few months before they finally allowed scientific calculators. It wasn't a masterpiece, I didn't cherish it, and it is lost in the annals of my history some twenty-five years or more ago.
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Yeah, that's what they teach, but when using the logarithmic scales properly, you really can do addition with it. Great invention, too bad non-sliding computers are taking over. :)
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
The logarithmic scales are what permit a slide rule to do multiplication. Setting the index of the slide over one multiplicand, one will then find the product beneath the other multiplicand. For this to result in addition, the scales would have to be linear, not logarithmic, and the result would be the sum of the number under the index and the other addend.
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OK, from the previous post, How many here actually OWN a slide rule, and can you use them? (I have one, and yes, I can use it). Actually I am reminded of an old physics teacher who pointed out that the calculations regarding a particular experiment were fairly simple, and "Didn't require a bucket of water in which to cool the slide rules!"
------------------------------------ "May I introduce Blon Fel-Fotch Pasermeer-Day Slitheen from the planet Raxacoricofallapatorious, known by her friends as Margaret" The Doctor
Yes and yes! (though only for reasonably basic stuff).
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The logarithmic scales are what permit a slide rule to do multiplication. Setting the index of the slide over one multiplicand, one will then find the product beneath the other multiplicand. For this to result in addition, the scales would have to be linear, not logarithmic, and the result would be the sum of the number under the index and the other addend.
Yes, multiplying and dividing numbers on a slide ruler is based on
log(x*y) = log(x) + log(y)which shows multiplication on one scale is equivalent to addition on another scale. On a simple ruler, with a few scales all layed-out logarithmically, the only thing you can do is slide the parts (that is adding lengths), then read the product/quotient. More elaborate rulers have extra scales, supporting extra functions; when a linear or a quadratic scale is present, you can do addition/subtraction! Here are an introduction[^] and a nice collection[^]. :)Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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What a slide rule? Some sort of new design pattern? ;) Marc
Available for consulting and full time employment. Contact me. Interacx
It's what the kids shout at wet and wild. "This slide rules."
"WPF has many lovers. It's a veritable porn star!" - Josh Smith