24 may 2018 10:14 pm edt
 - creation
 - add 3. to fuse 1 oxygen to another 1 oxygen, needs fusion which needs
 10:38 pm edt
 add
  maybe it is static electricity generate gravity, not
 10:40 pm edt
 reword
 maybe it is static electricity generate gravity, not
 to
 maybe static electricity, generate gravity,
 11:42 pm edt
 1. make obsolete
     2. then water vapor must be burnt at 2200 celcius to split h2 from o.
 2. add
     water electrolysis which needs 1.23 volts, produce hydrogen gas, oxygen gas.
  
;; 
to convert water (h2o) to oxygen (o2) :
  water electrolysis which needs 1.23 volts, produce hydrogen gas, oxygen gas.
  source : 
  1. 'Electrolysis of water is the decomposition of 
     water into oxygen and hydrogen gas due to 
     an electric current passed through the water. 
     The reaction has a standard potential of −1.23 V, 
     meaning it ideally requires a potential difference of 1.23 volts to split water.'
     in
     https://en.wikipedia.org/wiki/Electrolysis_of_water#Principle
     from 'Electrolysis of water'
     in
     https://en.wikipedia.org/wiki/Water_splitting#Electrolysis
     from '
     'Most of the station's oxygen will come from a process 
     called "electrolysis," which uses electricity from 
     the ISS solar panels to split water into hydrogen gas and oxygen gas.'
     in
     https://science.nasa.gov/science-news/science-at-nasa/2000/ast13nov_1/
     from ref [18]
     in
     'Water electrolysis is also used to generate oxygen for 
     the International Space Station.[17][18]'
     in
     https://en.wikipedia.org/wiki/Electrolysis_of_water
     from
     https://en.wikipedia.org/wiki/Water_splitting
     from
     'Water vapor does begin to dissociate at 2200 C.
      Water splitting'
      in
      https://www.quora.com/Does-water-vapour-contain-hydrogen-and-oxygen-separately
      from google (water vapor oxygen) result 5
  
[obsolete]
 1. water must be burnt to create water vapor
 2. then water vapor must be burnt at 2200 celcius to split h2 from o.
    source : 
    'Water vapor does begin to dissociate at 2200 C.
     Water splitting'
     in
     https://en.wikipedia.org/wiki/Water_splitting#Thermal_decomposition_of_water
     from google (water vapor oxygen) result 5
 3. to fuse 1 oxygen to another 1 oxygen, needs 
    nuclear fusion which can happen for 9 seconds so far :
    https://www.youtube.com/watch?v=FQvo4yGcUzU
    from youtube-search (nuclear fusion) result 3rd from last.
    that nuclear fusion needs
    'million degrees Celsius'
    in
    https://en.wikipedia.org/wiki/Tokamak#Basic_problem
    from google (tokamak fuse hydrogen) result 1
    
    maybe static electricity, generate gravity,
    heat can not generate gravity :
    https://www.youtube.com/watch?v=9NbCzbDdd-g
    from youtube search keyword 'static electricity in outer space',
    'static electricity in zero gravity'
  [reason]water-electrolysis is easier[/reason]
[/obsolete]