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Please note that the current conversion from the Delisle scale to the Fahrenheit scale is currently: [°F] = 121 − [°De] × 6⁄5 and the Fahrenheit to Delisle conversation is: [°De] = (121 − [°F]) × 5⁄6
These equations do not give the correct temperatures, the "121" should be "212". I did not check the Delisle conversation to other temperature scales, but it might be worth checking.
I am pretty positive this is an error, if someone could please edit the page to reflect the correct equation (I would do it but I have no idea how to edit these tables).
Also note that this equation must be changed on the Delisle wikipedia page.--
Corilof (
talk)
16:19, 10 July 2008 (UTC)
Details are sketchy.
Introduced circa 1894? Leiden, Leide, Leyde or Leyden? Symbol °L?
The scale is supposed to be the Kelvin scale shifted so the boiling points of hydrogen and oxygen are zero and 70 respectively. For oxygen, the 1 atm boiling point is in the 90.15 to 90.18 K range. For hydrogen, it depends on the variety; it is 20.390 K for "normal" hydrogen [75% orthohydrogen, 25% parahydrogen] and 20.268 K for pure parahydrogen. Assuming that absolute zero is -20.15 °L is close enough and has the virtue of giving a round shift to the Kelvin and Celsius scales.
Urhixidur 22:47, 2004 Aug 16 (UTC)
The new by Crissov invented brackets arround [°F] look crazy. What does that mean?
Smoky 10:50, 2005 May 11 (UTC)
Celsius | T°C = TK − 273.15 | TK = T°C + 273.15 |
---|---|---|
Celsius | TC = TK − 273.15 | TK = TC + 273.15 |
Celsius | TCelsius = TKelvin − 273.15 | TKelvin = TCelsius + 273.15 |
Celsius | T(°C) = T(K) − 273.15 | T(K) = T(°C) + 273.15 |
Celsius | [°C] = [K] − 273.15 | [K] = [°C] + 273.15 |
Celsius | °C = K − 273.15 | K = °C + 273.15 |
Let's add the Planck unit of temperature. Jimp 17Oct05
the use of the brackets is against the standard defined in ISO 31 - it's not wrong, but in Wikipedia we should not use them this way. The right way to use the brackets is:
to say this: the unit of the T (Temperature) is °C (degrees Celsius) (well it should better say Kelvin, but °C shows it better here). It would be great, if someone could add a good explanation to ISO 31-0 (I just added a short sentence there). Greetings -- 217.84.150.117 01:14, 28 July 2007 (UTC)
There's a handy template to display the same temperate in two units, e.g. {{convert|18|°C|°F|1}} yields 18 °C (64.4 °F). Should be mentioned somehow in the articles to teach editors about their existence. Also, there are tables which have been subject to subtle changes, which could be avoided by using the template. -- Matthead discuß! O 01:03, 30 September 2007 (UTC)
The conversion formulas on this page are incorrect, as are ALL the temperature conversions throughout various pages, for Réaumur and Rømer. The "273.13" in each of these forumlas should actually be "273.15" since this is the correct Kelvin value for 0˚C. As it stands, a conversion from Celsius -> Kelvin -> Réaumur gives an incorrect conversion from 0˚C to 0.016˚Re. Similar inaccuracies occur with Rømer conversions. I would change them all myself, but I'm not sure where to. Sbrocket ( talk) 04:36, 11 March 2008 (UTC)
- Celsius [℃] = [K] − 273.15 [K] = [℃] + 273.15
The conversion from Kelvin to Fahrenheit is incorrect. The correct conversion is:
[°F] = ([K] * 9/5) - 241.15
and therefore from Fahrenheit to Kelvin:
[K] = ([°F] + 241.15) * 5/9 —Preceding unsigned comment added by Avens19 ( talk • contribs) 16:15, 9 July 2010 (UTC)
We should remake the table image as a proper table. I'll lay the basis here. Please continue to fill it out. (Checking for errors is also good.) — Bromskloss ( talk) 09:52, 13 May 2008 (UTC)
#include <stdlib.h>
#include <stdio.h>
int main(){
double celsius, fahrenheit, kelvin, rankine, delisle, newton, reaumur, romer;
printf("{| class=\"wikitable\" style=\"text-align:center\"\n! Celsius !! Fahrenheit !! Kelvin !! Rankine !! Delisle !! Newton !! Réaumur !! Rømer\n");
for(celsius = 300; celsius >= -260; celsius -= 10){
fahrenheit = celsius * 9/5 + 32;
kelvin = celsius + 273.15;
rankine = kelvin * 9/5;
delisle = (100 - celsius) * 3/2;
newton = celsius * 33/100;
reaumur = celsius * 4/5;
romer = celsius * 21/40 + 7.5;
printf("|-\n| %.0f || %.0f || %.2f || %.2f || %.0f || %.1f || %.0f || %.2f \n", celsius, fahrenheit, kelvin, rankine, delisle, newton, reaumur, romer);
}
printf("|-\n| -273.15 || -459.67 || 0 || 0 || 559.725 || -90.1395 || -218.52 || -135.90375\n|}\n");
exit(0);
}
Merged Comparison of temperature scales into this article, since no-one seemed to care either way.
I'm removing the graph as it is either incorrect or at least easily misinterpreted. For example, the Celsius line would seem to indicate that ice melts at about -100C, and the Fahrenheit line seems to indicate that average human body temperature is about 40F, both of which are clearly incorrect. BW95 ( talk) 20:26, 26 August 2009 (UTC)
I'd like to propose an addition to the external link section. Right now there is a single link to a converter handling Fahrenheit, Celsius, Kelvin and Rankine. The following converter handles (as of this writing) those four scales plus 38 additional ones and furnishes the conversion formula and intersection points (if any) for whichever pair you choose:
http://www.curiousnotions.com/temperature-conversion
Many of those scales are pretty ancient and informally defined, but the page acknowledges this. Kukisvoomchor ( talk) 00:26, 25 June 2010 (UTC)
The new chart doesn't seem to be working for me. The text at the bottom overlaps. My regular browser is Chrome, but the problem occurs in IE9 and Firefox as well. My Wikipedia appearance preference is default, and thus Vector theme. Hope this helps. Zyxwv99 ( talk) 13:33, 28 April 2012 (UTC)
References link 1 (for the lowest temperature ever recorded on Earth) is dead. — Preceding unsigned comment added by 2.80.202.159 ( talk) 18:29, 2 May 2012 (UTC)
The conversion from celsius to Rankine is wrong. It currently says: [°R] = ([°C] + 273.15) × 9⁄5 It should be: [°R] = ([°C] + 491.67) × 9⁄5 — Preceding unsigned comment added by 86.88.184.43 ( talk) 14:49, 7 May 2013 (UTC)
It would be nice to have a chart/table showing intersections, such as where Celsius (°C) and Fahrenheit (°F) meet at -40.00°. -- Brangifer ( talk) 19:12, 11 October 2013 (UTC)
I come to Wikipedia for clear, concise and accurate information. Today's search for "standard temperatures" has wasted my entire afternoon (I am an engineer). While this topic should include "conversions" between most (or all) units or scales of temperature -- there should be some indication (somewhere) of Current or Common vs. Archaic, Abandoned or Obscure scales. Please improve. Thanks for your work HalFonts ( talk) 22:29, 4 March 2015 (UTC)
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The boiling point does appear in the graphic but not in the table above 87.218.84.22 ( talk) 12:30, 17 December 2023 (UTC)
This article is rated List-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||
|
Please note that the current conversion from the Delisle scale to the Fahrenheit scale is currently: [°F] = 121 − [°De] × 6⁄5 and the Fahrenheit to Delisle conversation is: [°De] = (121 − [°F]) × 5⁄6
These equations do not give the correct temperatures, the "121" should be "212". I did not check the Delisle conversation to other temperature scales, but it might be worth checking.
I am pretty positive this is an error, if someone could please edit the page to reflect the correct equation (I would do it but I have no idea how to edit these tables).
Also note that this equation must be changed on the Delisle wikipedia page.--
Corilof (
talk)
16:19, 10 July 2008 (UTC)
Details are sketchy.
Introduced circa 1894? Leiden, Leide, Leyde or Leyden? Symbol °L?
The scale is supposed to be the Kelvin scale shifted so the boiling points of hydrogen and oxygen are zero and 70 respectively. For oxygen, the 1 atm boiling point is in the 90.15 to 90.18 K range. For hydrogen, it depends on the variety; it is 20.390 K for "normal" hydrogen [75% orthohydrogen, 25% parahydrogen] and 20.268 K for pure parahydrogen. Assuming that absolute zero is -20.15 °L is close enough and has the virtue of giving a round shift to the Kelvin and Celsius scales.
Urhixidur 22:47, 2004 Aug 16 (UTC)
The new by Crissov invented brackets arround [°F] look crazy. What does that mean?
Smoky 10:50, 2005 May 11 (UTC)
Celsius | T°C = TK − 273.15 | TK = T°C + 273.15 |
---|---|---|
Celsius | TC = TK − 273.15 | TK = TC + 273.15 |
Celsius | TCelsius = TKelvin − 273.15 | TKelvin = TCelsius + 273.15 |
Celsius | T(°C) = T(K) − 273.15 | T(K) = T(°C) + 273.15 |
Celsius | [°C] = [K] − 273.15 | [K] = [°C] + 273.15 |
Celsius | °C = K − 273.15 | K = °C + 273.15 |
Let's add the Planck unit of temperature. Jimp 17Oct05
the use of the brackets is against the standard defined in ISO 31 - it's not wrong, but in Wikipedia we should not use them this way. The right way to use the brackets is:
to say this: the unit of the T (Temperature) is °C (degrees Celsius) (well it should better say Kelvin, but °C shows it better here). It would be great, if someone could add a good explanation to ISO 31-0 (I just added a short sentence there). Greetings -- 217.84.150.117 01:14, 28 July 2007 (UTC)
There's a handy template to display the same temperate in two units, e.g. {{convert|18|°C|°F|1}} yields 18 °C (64.4 °F). Should be mentioned somehow in the articles to teach editors about their existence. Also, there are tables which have been subject to subtle changes, which could be avoided by using the template. -- Matthead discuß! O 01:03, 30 September 2007 (UTC)
The conversion formulas on this page are incorrect, as are ALL the temperature conversions throughout various pages, for Réaumur and Rømer. The "273.13" in each of these forumlas should actually be "273.15" since this is the correct Kelvin value for 0˚C. As it stands, a conversion from Celsius -> Kelvin -> Réaumur gives an incorrect conversion from 0˚C to 0.016˚Re. Similar inaccuracies occur with Rømer conversions. I would change them all myself, but I'm not sure where to. Sbrocket ( talk) 04:36, 11 March 2008 (UTC)
- Celsius [℃] = [K] − 273.15 [K] = [℃] + 273.15
The conversion from Kelvin to Fahrenheit is incorrect. The correct conversion is:
[°F] = ([K] * 9/5) - 241.15
and therefore from Fahrenheit to Kelvin:
[K] = ([°F] + 241.15) * 5/9 —Preceding unsigned comment added by Avens19 ( talk • contribs) 16:15, 9 July 2010 (UTC)
We should remake the table image as a proper table. I'll lay the basis here. Please continue to fill it out. (Checking for errors is also good.) — Bromskloss ( talk) 09:52, 13 May 2008 (UTC)
#include <stdlib.h>
#include <stdio.h>
int main(){
double celsius, fahrenheit, kelvin, rankine, delisle, newton, reaumur, romer;
printf("{| class=\"wikitable\" style=\"text-align:center\"\n! Celsius !! Fahrenheit !! Kelvin !! Rankine !! Delisle !! Newton !! Réaumur !! Rømer\n");
for(celsius = 300; celsius >= -260; celsius -= 10){
fahrenheit = celsius * 9/5 + 32;
kelvin = celsius + 273.15;
rankine = kelvin * 9/5;
delisle = (100 - celsius) * 3/2;
newton = celsius * 33/100;
reaumur = celsius * 4/5;
romer = celsius * 21/40 + 7.5;
printf("|-\n| %.0f || %.0f || %.2f || %.2f || %.0f || %.1f || %.0f || %.2f \n", celsius, fahrenheit, kelvin, rankine, delisle, newton, reaumur, romer);
}
printf("|-\n| -273.15 || -459.67 || 0 || 0 || 559.725 || -90.1395 || -218.52 || -135.90375\n|}\n");
exit(0);
}
Merged Comparison of temperature scales into this article, since no-one seemed to care either way.
I'm removing the graph as it is either incorrect or at least easily misinterpreted. For example, the Celsius line would seem to indicate that ice melts at about -100C, and the Fahrenheit line seems to indicate that average human body temperature is about 40F, both of which are clearly incorrect. BW95 ( talk) 20:26, 26 August 2009 (UTC)
I'd like to propose an addition to the external link section. Right now there is a single link to a converter handling Fahrenheit, Celsius, Kelvin and Rankine. The following converter handles (as of this writing) those four scales plus 38 additional ones and furnishes the conversion formula and intersection points (if any) for whichever pair you choose:
http://www.curiousnotions.com/temperature-conversion
Many of those scales are pretty ancient and informally defined, but the page acknowledges this. Kukisvoomchor ( talk) 00:26, 25 June 2010 (UTC)
The new chart doesn't seem to be working for me. The text at the bottom overlaps. My regular browser is Chrome, but the problem occurs in IE9 and Firefox as well. My Wikipedia appearance preference is default, and thus Vector theme. Hope this helps. Zyxwv99 ( talk) 13:33, 28 April 2012 (UTC)
References link 1 (for the lowest temperature ever recorded on Earth) is dead. — Preceding unsigned comment added by 2.80.202.159 ( talk) 18:29, 2 May 2012 (UTC)
The conversion from celsius to Rankine is wrong. It currently says: [°R] = ([°C] + 273.15) × 9⁄5 It should be: [°R] = ([°C] + 491.67) × 9⁄5 — Preceding unsigned comment added by 86.88.184.43 ( talk) 14:49, 7 May 2013 (UTC)
It would be nice to have a chart/table showing intersections, such as where Celsius (°C) and Fahrenheit (°F) meet at -40.00°. -- Brangifer ( talk) 19:12, 11 October 2013 (UTC)
I come to Wikipedia for clear, concise and accurate information. Today's search for "standard temperatures" has wasted my entire afternoon (I am an engineer). While this topic should include "conversions" between most (or all) units or scales of temperature -- there should be some indication (somewhere) of Current or Common vs. Archaic, Abandoned or Obscure scales. Please improve. Thanks for your work HalFonts ( talk) 22:29, 4 March 2015 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Conversion of units of temperature. 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:
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Cheers.— InternetArchiveBot ( Report bug) 06:55, 11 November 2016 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Conversion of units of temperature. 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.
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regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 23:25, 8 September 2017 (UTC)
The boiling point does appear in the graphic but not in the table above 87.218.84.22 ( talk) 12:30, 17 December 2023 (UTC)