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Talk:Temperature

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344: 669: 449: 280: 562: 334: 313: 955:. Thank you for your concern. Yes, the article is overloaded with part repetition, and even confusing, and could do with improvements. If you find things in it that are "probably erroneous", please identify them, settle whether they are actually or just probably erroneous, and get them corrected, all by use of reliable sources. Quite likely there are erroneous things in the article. Much in Knowledge (XXG) is erroneous. 1009:; indeed, I suppose that all physically reasonable absolute temperature scales are so. But by that criterion, there are notable temperature scales that are "physically unreasonable". In particular, there is no general way of relating empirical temperature scales precisely affinely to the absolute scales. Material thermometric properties are often nearly but rarely precisely so. Much practical thermometry is empirical. 709: 552: 525: 439: 418: 240: 271: 1222:
There are many names for scientific thermometers. Using a table of contents that lists types of devices by name rather than calling each a thermometer doesn't support your argument. The third book link has 6 chapters titled by type of thermometer. Thermocouples, for example, are in the chapter titled
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There are a few references to manifolds in this article, i.e. "Hotness may be represented abstractly as a one-dimensional manifold." In this context, it seems like this introduces unnecessary jargon, and is less precise: there are only two one-dimensional manifolds, the circle and the real line, and
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All physically reasonable temperature scales are related by affine relations of the form T' = a T + T0. I believe the article should only mention the Fahrenheit and Celsius "relative scales" (i.e. defining a 1° difference) and the Kelvin scale (absolute zero at 0, same 1° difference than Celsius).
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There may be some confusion about the physics here. Satellites don't measure temperature directly. They do not use temperature sensors, except for monitoring themselves. Instead they measure incoming radiation at various wavelengths and, assuming a model of how the radiation is produced by the
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As for the sentence in the lead paragraph, I suggest "measured with a thermometer or by other means." This is comprehensive enough that it covers any sort of device or method of determining temperature, including those model-dependent satellite measurements of the earth's temperature.
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This wikipage is way too talky and mentions a lot of irrelevant stuff. Is it really necessary to include a graph of the human body temperature over the course of a day and various temperature scales before giving a formal definition and description of what temperature comes from?
1227:, which measure incoming radiation and convert that to temperature. While I would call just the first thermometers, with the advent of handheld remote infrared sensor devices such as those that became popular during the epidemic, some of the pyrometers are known as 1071:
with: "In Newtonian mechanics, momentum (PL: momenta or momentums; more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object." It isn't unreasonable to demand one sentence with a more scientific definition.
1235:. I would say that any device that reads out a result as temperature is considered a thermometer. If the output is radiation readings that need computer processing elsewhere, then it isn't a thermometer. But that is just my opinion on where the field is going. 1245:, then has a section on satellite temperature measurements. I would not merge the articles. Not all determinations of temperature are done using thermometers. It could be rewritten into the top-level article on the subject. 166: 894:. The literature contains discussions of temperature in terms of a hotness manifold. I haven't thought much about this, but I guess that so-called 'negative temperatures' can be seen as residing in the circle. 1306: 507: 678: 535: 1152: 1147: 1142: 1137: 1296: 1007: 1361: 1311: 1053:
Sorry, but I undid your edit: I think there was a formatting error, it messed up the layout of the intro, and I don't see the point of that highly technical thing in the lead.
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Before making this change, I want to check in with people that I'm not missing some historical reason to use the term manifold here--my background is in math, not physics.
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sensors, are not commonly called "thermometer". A thermometer onboard a satellite would be understood as measuring the satellite body temperature. Likewise, "
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radiating body, calculate the temperature. For stars this is a fairly simple process. For measuring temperatures on earth from a satellite this can get
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The reader should understand that °C or °F are 2 definitions of ° difference, with their respective offsets, and that K is like °C up to an offset.
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I added the thermodynamical definition in the intro and consider moving/deleting several sections that feels like word fillers.
753: 586: 575: 530: 357: 318: 87: 1286: 293: 203: 1165:" could have been called in principle "imaging thermometry", but it's not normally done so. If we don't agree on this, then 668: 78: 876: 181: 148: 239: 227: 223: 219: 215: 211: 207: 198: 122: 250: 937: 889: 872: 454: 299: 142: 1265: 1250: 1238: 1166: 1125: 1077: 1043: 913: 775:: perceived vs real, typical values, macroscopic vs microscopic, temperature of light, negative temperature 713: 1132:
not commonly called thermometers. This is supported by the table of contents of the following textbooks:
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on Knowledge (XXG). If you would like to participate, please visit the project page, where you can join
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and related subjects on Knowledge (XXG). To participate, help improve this article or visit the
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I would be fine with a phrasing such as "temperature measurement devices, such as household
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I think at least one proper definition is suitable. Compare with the article on momentum. It
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There are many notable temperature scales beyond the SI, Kelvin, Celsius, and Fahrenheit.
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the process of measuring a current local temperature for immediate or later evaluation
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standard, and to comprehensively cover the topic with quality encyclopedic articles.
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Perhaps all "physically reasonable" temperature scales would be of the form
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Talk:Thermometer#Distinction_between_thermometers_and_temperature_sensors
1223:"Thermoelectric thermometers". These are followed by three chapters on 581: 362: 254: 928:
This section is very confusing, redundant, and probably erroneous...
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hotness is represented abstractly as the real line, not the circle.
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why temperature can go below zero under a more rigorous definition
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why temperature cannot go below zero under a basic definition
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Knowledge (XXG) level-3 vital articles in Physical sciences
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A sentence is fine, but that's not really what you wrote.
844:: explain how the concept of temperature evolved over time 1219:. The temperature determinations are done back on earth. 1118: 741: 735: 729: 723: 173: 1106:
Are all temperature measuring devices "thermometers"?
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Restructure according to the guidelines proposed in
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Knowledge (XXG) vital articles in Physical sciences
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It starts out as 482:Knowledge (XXG):WikiProject Underwater diving 8: 1362:Top-importance General meteorology articles 1312:B-Class vital articles in Physical sciences 1327:B-Class physics articles of Top-importance 519: 412: 307: 1337:Low-importance Underwater diving articles 993: 971: 965: 786:: temperature changes since the big bang 756:, ie. with the following main sections: 521: 414: 309: 268: 1372:Knowledge (XXG) pages with to-do lists 1342:WikiProject Underwater diving articles 1292:Knowledge (XXG) level-3 vital articles 1242: 485:Template:WikiProject Underwater diving 1169:should be nominated for merging into 7: 1357:B-Class General meteorology articles 1136:Temperature Measurement and Control 1002:{\displaystyle T^{\prime }=aT+T_{0}} 573:This article is within the scope of 355:This article is within the scope of 1231:. 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2022 (UTC) 904:15:57, 28 August 2022 (UTC) 784:Temperature in the Universe 1388: 1120:Despite the etymology of " 660:project's importance scale 488:Underwater diving articles 401:project's importance scale 1205: 675: 653: 545: 501: 432: 394: 327: 306: 93:Be welcoming to newcomers 22:Skip to table of contents 1347:B-Class Weather articles 1317:B-Class physics articles 1151:Temperature Measurement 1146:Temperature Measurement 579:, which collaborates on 461:This article is part of 455:Underwater diving portal 21: 1239:Temperature measurement 1167:temperature measurement 1126:temperature measurement 796:Temperature in industry 767:Temperature in practice 471:-related articles to a 1287:B-Class vital articles 1233:radiation thermometers 1003: 802:Temperature in science 769:: (avoid theory here) 672: 88:avoid personal attacks 1229:infrared thermometers 1004: 671: 292:on Knowledge (XXG)'s 285:level-3 vital article 232:Auto-archiving period 113:Neutral point of view 964: 773:Types of 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