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An Engineer Examines Engineering
7/12/2013

Accuracy and precision are different things, Kuprenas writes. Accuracy is the absence of error; precision is the level of detail.   (Source: 101 Things I Learned in Engineering School)
Accuracy and precision are different things, Kuprenas writes. Accuracy is the absence of error; precision is the level of detail.
(Source: 101 Things I Learned in Engineering School)

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vimalkumarp
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Gold
Book
vimalkumarp   7/12/2013 6:29:23 AM
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Thanks a lot Rob for sharing info about this book. These insights on engineering will definitely boost the feeling of pride of being an engineer.

 

a.saji
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Silver
Re: Book
a.saji   7/12/2013 7:04:25 AM
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@vimal: Exactly, it is something that we all should be proud of. I think its just another factor which adds to our pride.

Charles Murray
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Great stuff
Charles Murray   7/12/2013 6:09:10 PM
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This is great stuff and I'd love to read this book. The story about the soldiers on the bridge is particularly intriguing. About thirty years ago, there was a similar story about a Big Ten football stadium that had to be beefed up because students in the upper deck would sway back and forth to a cheer that happened to be very close to the the natural frequency of the structure.

Nancy Golden
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Re: Book
Nancy Golden   7/12/2013 11:58:15 PM
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This looks like a very interesting read - I am on my way to Amazon now (Click Click). I think it will really fascinate my teenage son and engineer husband too. I appreciated the quote:

Early on, Kuprenas also wanted to be an artist. "It might seem odd, but in both professions you use your imagination and create new things," he said.

I believe engineering is extremely creative - that is one of the most fun aspects of it...

TJ McDermott
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Going for a paper book this time
TJ McDermott   7/13/2013 2:36:01 AM
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Rob, thanks for showing a fun read.  I'll, for the first time in a long time, be reaching for a real paper book.  Once I read it, I want to share it with other engineers in my office.

This is the one failing of Amazon's Kindle.  They artificially place a time limit on sharing something I purchase, and I can't GIVE it to anyone the way I can a real one.

Baen Books has no DRM - they are my favorite publisher for this reason.

Debera Harward
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Silver
Re: Book
Debera Harward   7/13/2013 4:31:09 AM
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Thanks Rob for sharing such good information i usually collect two to three books and then decide which to read first . After reading your post i have decided that this is going to be my next book . Its aboslutely not strange that Kuprenas wanted to become artist as well because like artist engineers are also creative people they should also think out of the box , both artist and engineer should have knowledge of material, they have imaginary skills ,they have great vision and so on.

Rob Spiegel
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Re: Great stuff
Rob Spiegel   7/14/2013 6:32:07 PM
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Yes, this is a very peculiar phenomenon, Chuck, I wonder of the washboard affect on dirt roads is related.

Rob Spiegel
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Re: Going for a paper book this time
Rob Spiegel   7/14/2013 6:40:12 PM
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TJ, for that reason and a bunch of others, I still prefer paper books. I'm a book lover. Have been since I was a kid. Loved books and magazines. My first library card was a beautiful thing. My first magazine subscription was just as wonderous -- Boy's Life, followed by The Magazine of Fantasy and Science Fiction.

vimalkumarp
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Gold
Re: Going for a paper book this time
vimalkumarp   7/15/2013 2:20:40 AM
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This book is worth just for the clear explanation on Accuracy and Precision. These fundamental definitions are very important as it is important to differentiate between accuracy, precision, resolution etc. Thanks Rob for the info on this book.

ratkinsonjr
User Rank
Gold
Re: Great stuff
ratkinsonjr   7/15/2013 9:53:38 AM
Absolutely correct. Do you remember the Ford truck commercial from the 1960's, touting the benefits of "Twin I-Beam" front suspensions? The one where the truck is driven over railroad ties with long poles attached to the cab and the front wheels with two rows of light bulbs bracketing each pole. As the truck is driven over the equally spaced ties, the pole attached to the wheels is smashing lightbulbs like crazy, but the pole attached to the cab rides absolutely level and not a single lightbulb breaks, showing how smooth the ride is. Lee Iococca mentions it in his autobiography, where he asked a Ford engineer how they did it. The engineer's reply was simple: they drove the truck at the speed required to get the suspension to resonate in order to keep the cab of the truck level. If the truck's speed was above or below resonance, the rod attached to the cab also smashed the lightbulbs with abandon. This is analogous to "valve float" where the valves in an internal combustion engine don't fully close when the valve springs reach their resonant frequency.

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