Jump to content

Talk:Engineering notation: Difference between revisions

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia
Content deleted Content added
Yobot (talk | contribs)
m Banner clean up using AWB (8436)
No edit summary
Line 60: Line 60:
==References, excess columns and rows==
==References, excess columns and rows==
See [[User:Edison/Template:Engineering notation prefixes]], a proposed table to replace the one used in this article. This article does not cite a physics or engineering textbook to the effect that this terminology is common. I have seen a lot of math notation by engineers, but have not seen this obsession with having the number 1000 raised to positive and negative powers. Instead, it is 10 which is raised to positive of negative powers. "Engineering notation" which sticks to multiples of 1000 is fine, but it is implicit in the tables shown in the references I cite below.The table is supposed to be the multiples of 10 used in engineering notation, but then it includes 10<sup>2</sup>, 10<sup>1</sup>,10<sup>-1</sup>, and 10<sup>-2</sup>, which should be removed. The refs also do not find it necessary to state what year each symbol or prefix was "invented." Books on science cover engineering notation, but they speak of sticking to the 10<sup>6</sup>, 10<sup>3</sup>, the plain number with no powers of ten coefficient, 10<sup>-3</sup>, 10<sup>-6</sup>, etc., without showing 1000 raised to every possible power. I propose we remove the column with 1000 raised to each power, and that we remove the column with a date for the number, since it clutters the table and distracts the reader. The column with "trilliardth"etc looks silly, as has been noted in the AFD for the article on "very small numbers, and scientists are more likely to use engineering notation or scientific notation than to state things in "septillionths." Then the article would conform to [http://books.google.com/books?id=E_wKgWBu8rUC&pg=PA18&dq=%22engineering+notation%22&hl=en&ei=d-Z6Tdr1NJGCrQGh-rjoBQ&sa=X&oi=book_result&ct=result&resnum=9&ved=0CFoQ6AEwCDgK#v=onepage&q=%22engineering%20notation%22&f=false Herrick], [http://books.google.com/books?id=6tDEZlwiMK0C&pg=PA27&dq=%22engineering+notation%22&hl=en&ei=2-V6TZjjKJH5rAHI-u3vBQ&sa=X&oi=book_result&ct=result&resnum=4&ved=0CD0Q6AEwAw#v=onepage&q=%22engineering%20notation%22&f=false Noll], [http://books.google.com/books?id=N6JpAs199AIC&pg=PA15&dq=%22engineering+notation%22&hl=en&ei=2-V6TZjjKJH5rAHI-u3vBQ&sa=X&oi=book_result&ct=result&resnum=6&ved=0CEcQ6AEwBQ#v=onepage&q=%22engineering%20notation%22&f=false Brumbach], [http://books.google.com/books?id=SWGO4ZpQly4C&pg=PA237&dq=%22engineering+notation%22&hl=en&ei=d-Z6Tdr1NJGCrQGh-rjoBQ&sa=X&oi=book_result&ct=result&resnum=10&ved=0CF8Q6AEwCTgK#v=onepage&q=%22engineering%20notation%22&f=false Stephan] and countless others. [[User:Edison|Edison]] ([[User talk:Edison|talk]]) 03:07, 12 March 2011 (UTC)
See [[User:Edison/Template:Engineering notation prefixes]], a proposed table to replace the one used in this article. This article does not cite a physics or engineering textbook to the effect that this terminology is common. I have seen a lot of math notation by engineers, but have not seen this obsession with having the number 1000 raised to positive and negative powers. Instead, it is 10 which is raised to positive of negative powers. "Engineering notation" which sticks to multiples of 1000 is fine, but it is implicit in the tables shown in the references I cite below.The table is supposed to be the multiples of 10 used in engineering notation, but then it includes 10<sup>2</sup>, 10<sup>1</sup>,10<sup>-1</sup>, and 10<sup>-2</sup>, which should be removed. The refs also do not find it necessary to state what year each symbol or prefix was "invented." Books on science cover engineering notation, but they speak of sticking to the 10<sup>6</sup>, 10<sup>3</sup>, the plain number with no powers of ten coefficient, 10<sup>-3</sup>, 10<sup>-6</sup>, etc., without showing 1000 raised to every possible power. I propose we remove the column with 1000 raised to each power, and that we remove the column with a date for the number, since it clutters the table and distracts the reader. The column with "trilliardth"etc looks silly, as has been noted in the AFD for the article on "very small numbers, and scientists are more likely to use engineering notation or scientific notation than to state things in "septillionths." Then the article would conform to [http://books.google.com/books?id=E_wKgWBu8rUC&pg=PA18&dq=%22engineering+notation%22&hl=en&ei=d-Z6Tdr1NJGCrQGh-rjoBQ&sa=X&oi=book_result&ct=result&resnum=9&ved=0CFoQ6AEwCDgK#v=onepage&q=%22engineering%20notation%22&f=false Herrick], [http://books.google.com/books?id=6tDEZlwiMK0C&pg=PA27&dq=%22engineering+notation%22&hl=en&ei=2-V6TZjjKJH5rAHI-u3vBQ&sa=X&oi=book_result&ct=result&resnum=4&ved=0CD0Q6AEwAw#v=onepage&q=%22engineering%20notation%22&f=false Noll], [http://books.google.com/books?id=N6JpAs199AIC&pg=PA15&dq=%22engineering+notation%22&hl=en&ei=2-V6TZjjKJH5rAHI-u3vBQ&sa=X&oi=book_result&ct=result&resnum=6&ved=0CEcQ6AEwBQ#v=onepage&q=%22engineering%20notation%22&f=false Brumbach], [http://books.google.com/books?id=SWGO4ZpQly4C&pg=PA237&dq=%22engineering+notation%22&hl=en&ei=d-Z6Tdr1NJGCrQGh-rjoBQ&sa=X&oi=book_result&ct=result&resnum=10&ved=0CF8Q6AEwCTgK#v=onepage&q=%22engineering%20notation%22&f=false Stephan] and countless others. [[User:Edison|Edison]] ([[User talk:Edison|talk]]) 03:07, 12 March 2011 (UTC)

==Layout==

I swear it seems like the author of this article has beef with engineers... shouldn't most of the article be about what engineering notation IS, who uses it, and why it's used, as opposed to taking up the entire article with one criticism of the notation repeated like three separate times? I mean nothing wrong with that, but condense it (seriously, multiple examples are not necessary) and add in some positives to it, really. [[Special:Contributions/129.67.120.145|129.67.120.145]] ([[User talk:129.67.120.145|talk]]) 21:33, 11 November 2012 (UTC)

Revision as of 21:33, 11 November 2012

WikiProject iconEngineering Stub‑class
WikiProject iconThis article is within the scope of WikiProject Engineering, a collaborative effort to improve the coverage of engineering on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
StubThis article has been rated as Stub-class on Wikipedia's content assessment scale.
???This article has not yet received a rating on the project's importance scale.

Untitled

Some people express the speed of light as 3e8 m/s, but I hesitate to add that to the already rather turgid discussion on the main article. --Eric Forste 07:50, 21 July 2005 (UTC)[reply]


I prefer to use engineering notation on my computer for the simple fact that SI prefixes match perfectly with it. For instance, a number like 9.65 × 104 C/mol (coulombs per mole) would be better written as 96.5 kC/mol. When I see the calculator display 96.5e3, I can better comprehend that number than 9.65e4. I'm not from Japan or China, after all, where they do traditionally go by sets of 4 digits. For instance, they would traditionally say that the speed of light is 3,0000,0000 meters per second. And as for that, that number is too large to comprehend whether it is displayed as .300 × 109 or as it is commonly, 3.00 × 108. The important element here is that the precision needs to be indicated, and it needs to be legible. Wherever engineering notation supports the precision part of it, it should be used, because it always is–to me–more legible. --D. F. Schmidt (talk) 09:29, 28 July 2005 (UTC)[reply]



Comment from article that I moved to the talk page:

good table .. but should perhaps be in Decimal. What has it to do with Engineering Notation?

Ancient Indians Hindu system of Mathematics has surprisingly Raise of 10 to 53 places!!! Raising 10 to the Power of 53

The highest prefix used for raising 10 to a power in today’s maths is ‘D’ for 10 to a power of 30 (from Greek Deca). While, as early as 100 BCE Indian Mathematicians had exact names for figures upto 10 to the power of 53.

ekam =1 dashakam =10 shatam =100 (10 to the power of 10) sahasram =1000 (10 power of 3) dashasahasram =10000 (10 power of 4) lakshaha =100000 (10 power of 5) dashalakshaha =1000000 (10 power of 6) kotihi =10000000 (10 power of 7) ayutam =1000000000 (10 power of 9) niyutam = (10 power of 11) kankaram = (10 power of 13) vivaram = (10 power of 15) paraardhaha = (10 power of 17) nivahaaha = (10 power of 19) utsangaha = (10 power of 21) bahulam = (10 power of 23) naagbaalaha = (10 power of 25) titilambam = (10 power of 27) vyavasthaana

pragnaptihi = (10 power of 29) hetuheelam = (10 power of 31) karahuhu = (10 power of 33) hetvindreeyam = (10 power of 35) samaapta lambhaha = (10 power of 37) gananaagatihi) = (10 power of 39) niravadyam = (10 power of 41) mudraabaalam = (10 power of 43) sarvabaalam = (10 power of 45) vishamagnagatihi = (10 power of 47) sarvagnaha = (10 power of 49) vibhutangamaa = (10 power of 51) tallaakshanam = (10 power of 53)

(In Anuyogdwaar Sutra written in 100 BCE one numeral is raised as high as 10 to the power of 140).


References, excess columns and rows

See User:Edison/Template:Engineering notation prefixes, a proposed table to replace the one used in this article. This article does not cite a physics or engineering textbook to the effect that this terminology is common. I have seen a lot of math notation by engineers, but have not seen this obsession with having the number 1000 raised to positive and negative powers. Instead, it is 10 which is raised to positive of negative powers. "Engineering notation" which sticks to multiples of 1000 is fine, but it is implicit in the tables shown in the references I cite below.The table is supposed to be the multiples of 10 used in engineering notation, but then it includes 102, 101,10-1, and 10-2, which should be removed. The refs also do not find it necessary to state what year each symbol or prefix was "invented." Books on science cover engineering notation, but they speak of sticking to the 106, 103, the plain number with no powers of ten coefficient, 10-3, 10-6, etc., without showing 1000 raised to every possible power. I propose we remove the column with 1000 raised to each power, and that we remove the column with a date for the number, since it clutters the table and distracts the reader. The column with "trilliardth"etc looks silly, as has been noted in the AFD for the article on "very small numbers, and scientists are more likely to use engineering notation or scientific notation than to state things in "septillionths." Then the article would conform to Herrick, Noll, Brumbach, Stephan and countless others. Edison (talk) 03:07, 12 March 2011 (UTC)[reply]

Layout

I swear it seems like the author of this article has beef with engineers... shouldn't most of the article be about what engineering notation IS, who uses it, and why it's used, as opposed to taking up the entire article with one criticism of the notation repeated like three separate times? I mean nothing wrong with that, but condense it (seriously, multiple examples are not necessary) and add in some positives to it, really. 129.67.120.145 (talk) 21:33, 11 November 2012 (UTC)[reply]