/home/bill/Projects/Dark matter, spiral galaxies, and galactic current sheets/0_notes Dark  matter etc.txt





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02Jul2015 Coil inductance for glow-ball 
http://www.66pacific.com/calculators/coil_calc.aspx
20 turns, 12" diameter, 12" length, single layer of wire 
   -> L = Inductance = 82.8 microhenries 
20 turns, 12" diameter, 12" length, 3 layers of wire 
   -> L = Inductance = 66.2 microhenries (it went down!!)
60 turns, 12" diameter, 12" length, 3 layers of wire 
   -> L = Inductance = 596 microhenries (much more than 3 times the effect!!??!!??
60 turns, 12" diameter, single disk of conductor, 3 layers of wire 
   -> L = Inductance = 1,600 microhenries  (WOW! again much more than 3 times the effect!!??!!??
>>  Result : just make the windings enough to provide "straight" magnetic field lines - say 3 times the diameter of the largest glow-ball (9" ?)
I have no idea of how many microHenries it takes to flatten the glowball discharg - electrons are small and probably conform easily, but just try it.
Hook up the electric DC 24 V lawn mower as a current limiter for safety.
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02Jul2015 generate 10 second video with OpenShot from combined picture sequence
Produce ogv video
1. open OpenShot
2. menu File -> Import image sequence : 
   Filename pattern :  "stars & Birkeland-%06d.jpg"
      Note : "%06d" denotes a 0-padded number sequence
   Frames per image : 1
   Repeat sequence : leave blank for this project
   Image folder : 
      /home/bill/Projects/Dark matter, spiral galaxies, and galactic current sheets/1 - initial, simple/combined/
   Click "Import Image Sequence"
.
3. Back in openshot main window 
   drag "Battle_of_Oil-%06d.jpg" icon to "track 1"
   menu File -> export video
   File name :  Dark matter video 1 - initial, simple.mpeg
   Export to folder : 
      /home/bill/Projects/Dark matter, spiral galaxies, and galactic current sheets/1 - initial, simple/
   Profile : Web
   Target  : YouTube
   Video profile : VGA NTSC
   Quality :  Med (for now...)
   Click button "Export video"
.
>> Result :  Awesome!


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02Jul2015 I [found, cropped, resized to 336*336] a picture of sporal galaxy : 
Spiral galaxy - abyss.uoregon.edu - heic0506a cropped & cleaned.png

Spiral galaxy - abyss.uoregon.edu.
Spiral galaxy - www.nasa.gov m101.jpg
Spiral galaxy - jean-baptiste-faure.blogspot.com NC 4535
Spiral galaxy - www.nasa.gov Dwarf Galaxy Caught Ramming Into a Large Spiral Galaxy
Spiral galaxy - bacaklik.net 
Spiral galaxy - www.lecosmographe.com Collection de galaxies spirales déshabillées de leurs poussières
 498  428
1280  888
 926  856
  70    0
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01Jul2015 I programmed the combination of two image sequences, and fixed image sizing problems
30Jun2015 COOL!!! program documentation access, for example :  
/usr/share/doc/imagemagick/
However, in this case the document is missing!   So use : 
www.imagemagick.org/script/composite.php





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