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Gon: I don't know what it means so can you please tell me? -- (unsigned by) IP 211.31.211.70 on 2005-07-06T09:45:42
Is it so much easier to add or subtract 100 than 90? This shouldn't be listed as a pro of the gon unit. -- (unsigned by) 85.224.111.200 on 2005-08-04T21:10:18
Curiously, MicroSoft did call it "gradient" for a while on its calculator that comes with Windows; my XP version has "Grads". -- Gene Nygaard 14:31, 25 October 2005 (UTC)
I've moved this from Gon to Grad. I've never heard it called the "gon" before (and I'm a measurements buff), the refernces given by the article imply that gon is a Scandianvian and possibly German word, dictionary.com does not find gon as a unit of measure. -- Rich Farmbrough 23:07, 30 October 2005 (UTC)
Looks like ISO standard symbol is "gon" but it's in an annex of a document I don't have.... -- (unsigned by) Rich Farmbrough on 2005-10-31T01:17:49
Trigonometry doesn't work nearly as well with grads or gons or whatever you want to call them. The sine of 30 degrees (or pi over 6)is a lot easier to deal with than 33.33333333333333333333 etc. grads - to get the even .5
-- (unsigned by) IP 209.80.153.45 on 2006-10-06T19:16:02
The article as currently posted seems contradictory. The confusion between centigrade (temperature) and centigrade (angle) was the reason for the <rejection> of centigrade (temperature), and the adoption of Celsius for temperature... —The preceding unsigned comment was added by 198.96.86.4 ( talk) 17:12, 13 March 2007 (UTC).
This term is mentioned in the article but does not appear on even one Web page (according to a Google search) other than various copies of the same Wikipedia article. When I try to put a "citation needed" tag on it, some obsessed freak keeps reverting me. Can someone prove evidence for this word or ensure it is removed? Thanks.
-- 86.131.98.77 ( talk) 18:29, 27 January 2010 (UTC)
I'm just changing the grad signal used through the article to the international standard, "gon". If you have any objections, please reply, or simply change it back to the original state. -- 200.17.147.2 ( talk) 18:23, 1 March 2010 (UTC)
In the "conversion of some common angles"
Units | Values | |||||||
---|---|---|---|---|---|---|---|---|
Turns | 0 | |||||||
Degrees | 0° | 30° | 45° | 60° | 90° | 180° | 270° | 360° |
Radians | 0 | 2 | ||||||
Grads | 0g | 50g | 100g | 200g | 300g | 400g |
However, the turns row is all wrong. Should be 0, 1/12, 1/8, 1/6, 1/4, 1/2, 3/4, 1 not 0, tau/12, tau/8, tau/6, tau/4, tau/2, 3/4 tau, 1 tau. For reference, see the Wikipedia page on "Turn(geometry)" or "Degree(angle)". The same mistake is there on the page "Radian". So it should be
Units | Values | |||||||
---|---|---|---|---|---|---|---|---|
Turns | 0 | |||||||
Degrees | 0° | 30° | 45° | 60° | 90° | 180° | 270° | 360° |
Radians | 0 | 2 | ||||||
Grads | 0g | 50g | 100g | 200g | 300g | 400g |
-- (unsigned by) IP 220.255.2.27 on 2011-11-09
The article claims
"In the 1970s and 80s most scientific calculators offered the grad as well as radians and degrees for their trigonometric functions,[4] but in recent years most offer degrees and radians only.[5]"
The cited source [5] says that calculators offer two modes degrees and radians. It does not mention grads but doesn't explictly exclude them either.
I just did a search for scientific calculator on google shopping in the UK and grabbed a few high results from different major brands (casio, cannon, hp)
-- 130.88.154.105 ( talk) 14:01, 20 October 2014 (UTC)
The result of the move request was: not moved. The consensus is that the current title is the common name. Jenks24 ( talk) 05:44, 4 November 2015 (UTC)
Gradian →
Gon (angle) – Gon is the name of this unit in
ISO 31-1 (superseded by ISO 80000-3) and in
ISO 80000-3
ISO 80000-3#Units of angle. Prefereably is even
Gon (angle measurement) (. I think where possible it is best to follow ISO standards.
WillemienH (
talk)
08:25, 27 October 2015 (UTC)
It is also known as gon [...], grad, or grade
Are "gon" and "grad" symbols or nouns? The definition above suggests they are common nouns, like "gradian" itself, but they are used throughout the article as symbols that do not vary in the plural. If they are symbols, this should be made clear. — 91.238.123.116 ( talk) 11:52, 22 March 2016 (UTC)
... A "disadvantage" is that the common angles of 30° and 60° in geometry must be expressed in fractions (33 1/3 grad and 66 2/3 grad, respectively). Similarly, in one hour (1/24 day), Earth rotates by 15° or 16 2/3 gon ...
the "hour" is based on degree, so it's obvious that is more convenient than grad. well, what if we divide a day by 8*2 = 16 "krones", instead of 12*2 =24 hours? (why: a day = one rev of Earth, 1/60 arc = deg , 1/100 rect = grad {sexagesimal vs decimal}. arc is caught from regular trigon while rect is observed in regular tetragon. so 1 rev = 6 arc = 4 rect. well, 24 h ≡ 6 arc * 4 so we replace "6 arc" by its equivalent "4 rect", so we have 16 k ≡ 4 rect * 4). now " ... in one krone (1/16 day), Earth rotates by 25 ͨ ... (read superscript c as grad). considering of time zones, it means that instead of 24 time-band of 15°, we have 16 time-band of 25 ͨ . it's interesting that 15° = 15 /60 arc = 0.25 arc while 25 ͨ = 25 /100 rect = 0.25 rect! [for common angles of 30° and 60° in geometry, we can workaround by expressing them as ρ/3, 2ρ/3 (ρ is rect). see "advantages": (C/2) /d = (S/2) /d2 = ρ, and also A = 1/2 ρd2, V = 1/3 ρd3 [C, A: circle circumference; area. S, V: sphere surface; volume. d: diameter].
Tabascofernandez (
talk)
23:44, 16 July 2017 (UTC)
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While the advantages of more divisors are true, the example of using earth rotation is wrong and misleading - the earth of course doesn't rotate one turn in 24 hours, so neither 15° nor 16 2/3 gon are exact values (it's about 14.96 and 16.62, respectively). While the real values are near the provided values, there is no point in saying "these not quite correct values are easier to write this way". I don't think the example can be saved and should be removed. 109.193.229.175 ( talk) 17:44, 1 December 2018 (UTC)
One example listed in the "Advantages..." section claims the earth rotates 15° as opposed to 16 2/3 grad, but the actual rotation is slightly larger than 15°, so the actual number is very uneven in both systems. 46.223.43.217 ( talk) 22:49, 26 October 2020 (UTC)
This is the
talk page for discussing improvements to the
Gradian article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This ![]() It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||
|
Gon: I don't know what it means so can you please tell me? -- (unsigned by) IP 211.31.211.70 on 2005-07-06T09:45:42
Is it so much easier to add or subtract 100 than 90? This shouldn't be listed as a pro of the gon unit. -- (unsigned by) 85.224.111.200 on 2005-08-04T21:10:18
Curiously, MicroSoft did call it "gradient" for a while on its calculator that comes with Windows; my XP version has "Grads". -- Gene Nygaard 14:31, 25 October 2005 (UTC)
I've moved this from Gon to Grad. I've never heard it called the "gon" before (and I'm a measurements buff), the refernces given by the article imply that gon is a Scandianvian and possibly German word, dictionary.com does not find gon as a unit of measure. -- Rich Farmbrough 23:07, 30 October 2005 (UTC)
Looks like ISO standard symbol is "gon" but it's in an annex of a document I don't have.... -- (unsigned by) Rich Farmbrough on 2005-10-31T01:17:49
Trigonometry doesn't work nearly as well with grads or gons or whatever you want to call them. The sine of 30 degrees (or pi over 6)is a lot easier to deal with than 33.33333333333333333333 etc. grads - to get the even .5
-- (unsigned by) IP 209.80.153.45 on 2006-10-06T19:16:02
The article as currently posted seems contradictory. The confusion between centigrade (temperature) and centigrade (angle) was the reason for the <rejection> of centigrade (temperature), and the adoption of Celsius for temperature... —The preceding unsigned comment was added by 198.96.86.4 ( talk) 17:12, 13 March 2007 (UTC).
This term is mentioned in the article but does not appear on even one Web page (according to a Google search) other than various copies of the same Wikipedia article. When I try to put a "citation needed" tag on it, some obsessed freak keeps reverting me. Can someone prove evidence for this word or ensure it is removed? Thanks.
-- 86.131.98.77 ( talk) 18:29, 27 January 2010 (UTC)
I'm just changing the grad signal used through the article to the international standard, "gon". If you have any objections, please reply, or simply change it back to the original state. -- 200.17.147.2 ( talk) 18:23, 1 March 2010 (UTC)
In the "conversion of some common angles"
Units | Values | |||||||
---|---|---|---|---|---|---|---|---|
Turns | 0 | |||||||
Degrees | 0° | 30° | 45° | 60° | 90° | 180° | 270° | 360° |
Radians | 0 | 2 | ||||||
Grads | 0g | 50g | 100g | 200g | 300g | 400g |
However, the turns row is all wrong. Should be 0, 1/12, 1/8, 1/6, 1/4, 1/2, 3/4, 1 not 0, tau/12, tau/8, tau/6, tau/4, tau/2, 3/4 tau, 1 tau. For reference, see the Wikipedia page on "Turn(geometry)" or "Degree(angle)". The same mistake is there on the page "Radian". So it should be
Units | Values | |||||||
---|---|---|---|---|---|---|---|---|
Turns | 0 | |||||||
Degrees | 0° | 30° | 45° | 60° | 90° | 180° | 270° | 360° |
Radians | 0 | 2 | ||||||
Grads | 0g | 50g | 100g | 200g | 300g | 400g |
-- (unsigned by) IP 220.255.2.27 on 2011-11-09
The article claims
"In the 1970s and 80s most scientific calculators offered the grad as well as radians and degrees for their trigonometric functions,[4] but in recent years most offer degrees and radians only.[5]"
The cited source [5] says that calculators offer two modes degrees and radians. It does not mention grads but doesn't explictly exclude them either.
I just did a search for scientific calculator on google shopping in the UK and grabbed a few high results from different major brands (casio, cannon, hp)
-- 130.88.154.105 ( talk) 14:01, 20 October 2014 (UTC)
The result of the move request was: not moved. The consensus is that the current title is the common name. Jenks24 ( talk) 05:44, 4 November 2015 (UTC)
Gradian →
Gon (angle) – Gon is the name of this unit in
ISO 31-1 (superseded by ISO 80000-3) and in
ISO 80000-3
ISO 80000-3#Units of angle. Prefereably is even
Gon (angle measurement) (. I think where possible it is best to follow ISO standards.
WillemienH (
talk)
08:25, 27 October 2015 (UTC)
It is also known as gon [...], grad, or grade
Are "gon" and "grad" symbols or nouns? The definition above suggests they are common nouns, like "gradian" itself, but they are used throughout the article as symbols that do not vary in the plural. If they are symbols, this should be made clear. — 91.238.123.116 ( talk) 11:52, 22 March 2016 (UTC)
... A "disadvantage" is that the common angles of 30° and 60° in geometry must be expressed in fractions (33 1/3 grad and 66 2/3 grad, respectively). Similarly, in one hour (1/24 day), Earth rotates by 15° or 16 2/3 gon ...
the "hour" is based on degree, so it's obvious that is more convenient than grad. well, what if we divide a day by 8*2 = 16 "krones", instead of 12*2 =24 hours? (why: a day = one rev of Earth, 1/60 arc = deg , 1/100 rect = grad {sexagesimal vs decimal}. arc is caught from regular trigon while rect is observed in regular tetragon. so 1 rev = 6 arc = 4 rect. well, 24 h ≡ 6 arc * 4 so we replace "6 arc" by its equivalent "4 rect", so we have 16 k ≡ 4 rect * 4). now " ... in one krone (1/16 day), Earth rotates by 25 ͨ ... (read superscript c as grad). considering of time zones, it means that instead of 24 time-band of 15°, we have 16 time-band of 25 ͨ . it's interesting that 15° = 15 /60 arc = 0.25 arc while 25 ͨ = 25 /100 rect = 0.25 rect! [for common angles of 30° and 60° in geometry, we can workaround by expressing them as ρ/3, 2ρ/3 (ρ is rect). see "advantages": (C/2) /d = (S/2) /d2 = ρ, and also A = 1/2 ρd2, V = 1/3 ρd3 [C, A: circle circumference; area. S, V: sphere surface; volume. d: diameter].
Tabascofernandez (
talk)
23:44, 16 July 2017 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Gradian. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
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have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
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(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 02:20, 22 October 2017 (UTC)
While the advantages of more divisors are true, the example of using earth rotation is wrong and misleading - the earth of course doesn't rotate one turn in 24 hours, so neither 15° nor 16 2/3 gon are exact values (it's about 14.96 and 16.62, respectively). While the real values are near the provided values, there is no point in saying "these not quite correct values are easier to write this way". I don't think the example can be saved and should be removed. 109.193.229.175 ( talk) 17:44, 1 December 2018 (UTC)
One example listed in the "Advantages..." section claims the earth rotates 15° as opposed to 16 2/3 grad, but the actual rotation is slightly larger than 15°, so the actual number is very uneven in both systems. 46.223.43.217 ( talk) 22:49, 26 October 2020 (UTC)