txt: ## dist_zef-p6steve-Physics-Constants.md
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  Bridging physical constants into [Physics::Measure](https://github.com/p6steve/raku-Physics-Measure) objects
  
  # SYNOPSIS
  
  ```
  #!/usr/bin/env raku
  use Physics::Constants;  #<== must use before Physics::Measure
  use Physics::Measure :ALL;
  
  say ~kg-amu;                        #6.02214076e+26 mol^-1  (avogadro number = Na)
  say ~plancks-h;                     #6.626070015e-34 J.s
  say ~faraday-constant;              #96485.33212 C/mol
  say ~fine-structure-constant;       #0.0072973525693   (dimensionless)
  say ~μ0;                            #1.25663706212e-06 H/m
  say ~ℏ;                             #1.054571817e-34 J.s
  
  my \λ = 2.5nm;
  say "Wavelength of photon (λ) is " ~λ;
  
  my \ν = c / λ;
  say "Frequency of photon (ν) is " ~ν.in('petahertz');
  
  my \Ep = ℎ * ν;
  say "Energy of photon (Ep) is " ~Ep.in('attojoules');
  
  #Wavelength of photon (λ) is 2.5 nm
  #Frequency of photon (ν) is 119.9169832 petahertz
  #Energy of photon (Ep) is 79.45783266707788 attojoules
  
  This module is a wrapper on JJ Merelo Math::Constants
  https://github.com/JJ/p6-math-constants
  #say '----------------';
  #say @physics-constants;
  #say '----------------';
  #say @physics-constants-names.sort;
  #say '----------------';
  #say @physics-constants-abbreviations.sort;
  
  ```
  