#magnetism

nowisthetime@pod.automat.click

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On March 11th, a huge #filament of #magnetism filled with dark #plasma erupted from the southwestern limb of the #sun. NASA's Solar Dynamics Observatory recorded the structure hurling itself into space:

"Dark plasma" is not a special kind of plasma; it's just cooler and less luminous than the background sun. It is also denser than surrounding gas. These characteristics give the material extra "punch" as it flies out of the sun's atmosphere.

This eruption formed a #CME, which was seen flying away from the sun shortly after the blast. NOAA analysts have modeled the CME and determined that it could graze Earth's magnetic field on March 15th, producing a G1-class geomagnetic storm.
https://spaceweather.com/

rhoutman@pod.orkz.net
FOUR QUADRANT REPRESENTATION OF ELECTRICITY - Eric P Dollard

This is Eric Dollard’s most important work. This 3 hour lecture describes how AC #electricity really works using his famous Four-Quadrant #Theory, which is rooted in the work of Charles #Steinmetz.
For the first time ever, you will see how AC is really a rotating #electromagnetic field around the power wires just like a drive shaft, and this rotating field is what actually turns a motor that is connected to it.

The book was not a part of the conference but came later when Eric put the presentation in book form. This book is what you need if you really want to study the mathematics at a deeper level.
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https://ericpdollard.com/shop/four-quadrant-representation-of-electricity/ #education #electricity #magnetism #science

rhoutman@pod.orkz.net

Open Numerical Engineering LABoratory(ONELAB), Gmsh, GetDP

  • ONELAB (https://onelab.info) is an abstract interface for sharing information between codes. It is an open-source, lightweight interface to #finite #element #software. It is completely free: the default ONELAB software bundle contains the mesh generator Gmsh, the finite element solver GetDP and the optimization library conveks. Many other codes (free or not) can be easily interfaced as well.
  • Gmsh (https://gmsh.info) is a 3D finite element mesh generator with a built-in CAD engine and post-processor
  • GetDP (https://getdp.info) is a general finite element solver using mixed finite elements

INFO PDF https://onelab.info/slides/onelab.pdf

#opensource #floss #engineering #math #3d #mesh #geometry #magnetism #physics #science #electromagnetism #belgium #gmsh #getdp #onelab #android #iphone #windows #linux #mac