I agree. People who are technically correct make it seem complicated and confusing and are counterproductive when it comes to the real world and when promoting the metric system
Al Lawrence ________________________________ From: USMA <usma-boun...@colostate.edu> on behalf of Mark Henschel <mwhensch...@gmail.com> Sent: Wednesday, August 31, 2016 6:21 PM To: Kaimbridge M. GoldChild Cc: US Metric Assn M Subject: [USMA 305] Re: Fahrenheit-Celsius Both Flawed Don't make this into hard work. 30 is hot, 20 is nice, 10 is chilly, 0 is ice. No temperature scale is perfect, but this one works much better than Fahrenheit since it is based on water and not ammonia. Mark Henschel On Wed, Aug 31, 2016 at 3:05 PM, Kaimbridge M. GoldChild <kaimbri...@gmail.com<mailto:kaimbri...@gmail.com>> wrote: In terms of temperature measurement, it would seem that both the Fahrenheit *and* Celsius scales are flawed. In angle measurement, there is the raw radian—where 1 radian along a circleʼs circumference equals its radius—and two other, more user friendly magnitudes, the degree (D°) and centesimal degree, or gradian (Hᵍ): 1ᵍ = .9°; 1° = 1.111111...ᵍ; Right Angle = 90° = 100ᵍ; Straight Angle = 180° = 200ᵍ; Full Angle = 360° = 400ᵍ; There are two modern temperature scales in use today, both based on angle measurement, and each having two different rates/intervals with different baselines or “offsets”—two for degrees (Fahrenheit, “°F”, and Rankine, “°R”) and two for gradians (Celsius, “°C”, and Kelvin, “K”, with no “ᵍ” or “°”). Both Rankine and Kelvin are based on 0 being absolute zero (i.e., all thermal motion ceases), while Celsius is based on 0 being the freezing point of water and Fahrenheit being the lowest freezing point for brine (a specific salt water mixture). One flaw (or at least discrepancy) is that the freezing-boiling point spread for Fahrenheit is 180°/200ᵍ (a straight angle), while for Celsius it is only 90°/100ᵍ (a right angle). And with Fahrenheit, there is the “+32” offset. Back when they adjusted and made Celsius the SI temperature standard, wouldnʼt it have been better to create a “straight angle” degree/gradian set (where º = Crtl+Shft+BA and ᵍ = Crtl+Shft+1D4D), D°S or just Dº equals HᵍS or just Hᵍ, and have either just gotten rid of the “32” and designated Fahrenheit as being from 0-180° (rather than 32-212°) and used that as the standard, or—if they particularly wanted a gradian based scale—double what is now known as Celsius, so it would range from 0-200ᵍ, thereby making it more precise than Fahrenheit (since 1ᵍ = .9° and 1 °C = 2ᵍS = 1.8°S), thus 45º = 45°S = 77 °F = 25 °C = 50ᵍS = 50ᵍ? (Since it is a direct angle based scale, I would suggest that there be no space between the number and °S/ᵍS.) Or, if they wanted a degree scale corresponding to the gradian Celsius, reduce Fahrenheit to half its size, without the offset: 1 °F_h = 2 °F, thus having a freezing-boiling point range of 0-90°F_h (0-100ᵍ)—though, as sometimes Celsius is expressed in half increments, I would think either 0-180º or 0-200ᵍ would be the best scale. From all this, the following temperatures relate as such: [ -491.67º =-459.67 °F = 0 °R = 0 K =-273.15 °C = -546.3ᵍ ] | | | | | 0º = 32 °F = 491.67 °R = 273.15 K = 0 °C = 0ᵍ 9º = 41 °F = 500.67 °R = 278.15 K = 5 °C = 10ᵍ 18º = 50 °F = 509.67 °R = 283.15 K = 10 °C = 20ᵍ ---------------------------------------------------- 22.5º =54.5 °F = 514.17 °R = 285.65 K =12.5 °C = 25ᵍ 30º = 62 °F = 521.67 °R ≈ 289.82 K ≈16.7 °C ≈33.3ᵍ 45º = 77 °F = 536.67 °R = 298.15 K = 25 °C = 50ᵍ 60º = 92 °F = 551.67 °R ≈ 306.48 K ≈33.3 °C ≈66.7ᵍ 66.6º =98.6 °F = 558.27 °R = 310.15 K = 37 °C = 74ᵍ 67.5º =99.5 °F = 559.17 °R = 310.65 K =37.5 °C = 75ᵍ ---------------------------------------------------- 70º = 102 °F = 561.67 °R ≈ 312.05 K ≈38.9 °C ≈77.8ᵍ 90º = 122 °F = 581.67 °R = 323.15 K = 50 °C = 100ᵍ 180º = 212 °F = 671.67 °R = 373.15 K = 100 °C = 200ᵍ Thus the extreme human “comfort zone” is about 25-75ᵍ (22.5-67.5º), with a narrower, more moderate “comfort zone” of about 30-60º (33.3-66.7ᵍ)! Is/was such a °S and/or ᵍS scale in use or ever considered? Finally, on the USMA temperature page, it says that “the freezing and boiling temperatures of water are whole numbers, but not round numbers as in the Celsius temperature scale”. What does that mean? ~Kaimbridge~ -- -- -- Wiki—Sites Contribution History Pages: en.wikipedia.org/wiki/Special:Contributions/Kaimbridge<http://en.wikipedia.org/wiki/Special:Contributions/Kaimbridge> math.wikia.com/wiki/Special:Contributions/Kaimbridge<http://math.wikia.com/wiki/Special:Contributions/Kaimbridge> wiki.gis.com/wiki/index.php/Special:Contributions/Kaimbridge<http://wiki.gis.com/wiki/index.php/Special:Contributions/Kaimbridge> rosettacode.org/wiki/Special:Contributions/Kaimbridge<http://rosettacode.org/wiki/Special:Contributions/Kaimbridge> ***** Void Where Permitted; Limit 0 Per Customer. ***** _______________________________________________ USMA mailing list USMA@colostate.edu<mailto:USMA@colostate.edu> https://lists.colostate.edu/cgi-bin/mailman/listinfo/usma
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