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Wed.Aug,20200812

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    >> Zoom : Sat.Aug,20200815.1000-6 <<
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    • An interesting discussion of number systems including comments on numbers with dimensional labels on
      FaceBook : FORTH PROGRAMMING LANGUAGE 21st CENTURY

    • A discussion , off  topic ,  on  the SiliconValley-ForthInterestGroup mail list on the basic physics of planetary temperature .  Archived : Re: [svfig] <NSF>MathCad and as eml .
      Here's my last reply , Beyond that , start at http://cosy.com/#PlanetaryPhysics

      At 06:14 PM 8/11/2020, you wrote:
      I'm talking about the ` climate models which predict mean global temperature going out to the end of the century used for political purposes . Weather models are much more tied to reality .

      The spectral GHG paradigm , aka: box , claims the ~ 33c difference between the inexcusably crude estimate of our planet's radiative equilibrium and our ~ 288K is due to a spectral ` GreenHouse effect .  My Heartland talk mainly works thru the handful of lines of K , starting from the computation of the 5.e-6 of the celestial sphere the disk of the Sun covers , ( is that a model ? ) to show the quantitative absurdity of claiming that Venus's bottom of atmosphere temperature ,  about 400K above its orbital gray body temperature of ~ 323 , about 2.25 time that orbital temperature , about 25 times the kinetic energy density , is due to some spectral effect .
      James Hansen et al's 1981 paper which is an embarrassment to NASA , seems to have been instrumental in coalescing  the paradigm , attributing w/o derivation or equation the gravitational adiabatic ` lapse gradient ( the 33c ) to some sort of spectrum heat trapping rather than the universal tradeoff of gravitational and kinetic energy .

      Both sides of the debate , including on the ` skeptics side Roy Spencer , Anthony Watts , Willis Eschenbach , have been ` trapped in this box , actively disparaging any idea that gravity has to be considered . But , if you are writing energy balance equations , and believe in conservation of energy , of course it does .

      As I said , these AGW models are pathetic . They go off  into Navier-Stokes finite models w/o ever deeply understanding the most simple non-optional testable quantitative classical  physics . They are making claims about the planet getting a percent or 2 hotter in the next century -- well it used to be , now its down to 80 years , when they literally don't know how to calculate the temperature of a billiard ball under a sunlamp .

      Well , you asked ,

      BobA

    • Lot of work on Mail list organization . Adding tags to have individualized topic choices . Email me with tags , like eg: `( party  Earth physics )` and I'll limit your mails to those category . Empty ( no request ) implies All .

    • | 20200813.1015 | BAA Zoom   One point which came up is combinators and Iverson's ` forks & ` hooks and ` commute , ⍨ , in APL which I attribute to John Scholes . 
      In Forth since it's just ' swap . In CoSy/AltStackOps.f it is also aliased to ' --ba  :
        ` swap See
      00427C32  89 C3                       mov ebx,eax
      00427C34  8B 06                       mov eax,[esi]
      00427C36  89 1E                       mov [esi],ebx
      00427C38  C3                          ret
      My understanding of combinators is shallow . But the most generic is the Y combinator . I really means just a verb which acts on 2 arguments rather than just 1 , but in either case , returning just 1 result .
      In APL terms , dyadic as opposed to monadic .
      CoSy largely sticks to the discipline of not having more than 2 arguments .

    --
              Bomb defusing and containment is now bubbling to the top of my priorities .
    --


    `nuff for now .  Comment below . or stop by the Zoom .

    BobA  | 20200813.2339 |

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