XPost: uk.media.tv.sf.drwho, alt.usage.english   
   From: nospam@de-ster.demon.nl   
      
   Stefan Ram  wrote:   
      
   > doctor@doctor.nl2k.ab.ca (The Doctor) wrote or quoted:   
   > >In article <1rnygoz.1e95pzz18vjp88N%nospam@de-ster.demon.nl>,   
   > >J. J. Lodder  wrote:   
   > . . .   
   > >>[1] Beware, Celsius is always degrees, because Celsius is a scale.   
   > >>'Kelvin' otoh is a unit, and writing 'degree Kelvin' is an error.   
   >   
   > doctor@doctor.nl2k.ab.ca (The Doctor) writes:   
   > >Still interchangable.   
   >   
   >   Among people who actually know the field,   
      
   Like you, for example?   
      
   >   "kelvin" counts as both   
   >   a unit and a scale. To back that up, I'm just going to quote a   
   >   bit from the well-known online encyclopedia "Wikipedia".   
      
   That's wrong, or at least confused.   
   Something is either a scale, or a unit, but not both.   
   If it is a unit, loosely calling it a scale   
   is merely a continuation of obsolete terminology.   
      
   This often happens in science.   
   When a field is new, people start with empirical scales,   
   just to quantify observations.   
   Like for example Celsius, Beaufort, or Richter.   
   When the field matures these scales may be replaced   
   by numerical values in units, like kelvin, m/s or Joule.   
      
   > |The kelvin (symbol: K) is the base unit for temperature in   
   > |the International System of Units (SI). The Kelvin scale is   
   > |an absolute temperature scale that starts at the lowest   
   > |possible temperature (absolute zero), taken to be 0 K.   
   > Wikipedia   
      
   ... is confused about it.   
   Correct: In the SI absolute temperatures are measured in kelvin.   
      
   In the case of temperatures it is easy to be confused.   
   For other units, less so.   
   No one in his right mind would use:   
   'I am 500 on the kilometer scale from London',   
      
   Jan   
      
   --   
   To confuse you further: As of the 2018 CGPM not only the triple point   
   of water has been eliminated from the definition,   
   but absolute zero no longer appears in it either.   
   So all appearance of a scale has been eliminated.   
      
   The kelvin is nowadays:   
   The kelvin, symbol K, is the SI unit of thermodynamic temperature;   
   its magnitude is set by fixing the numerical value   
   of the Boltzmann constant to be equal to exactly 1.380649 * 10^-23 J/K.   
   [joules per kelvin]. (NIST)   
   No degree or scale in sight, it just another unit.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)