Video: NASA's SDO captures cascading magnetic arches

January 18, 2016 by Steele Hill And Sarah Frazier

A dark solar filament above the sun's surface became unstable and erupted on Dec. 16-17, 2015, generating a cascade of magnetic arches. A small eruption to the upper right of the filament was likely related to its collapse.

The arches of solar material appear to glow as they emit light in extreme ultraviolet wavelengths, highlighting the charged particles spinning along the 's . This video was taken in extreme ultraviolet wavelengths of 193 angstroms, a type of light that is typically invisible to our eyes, but is colorized here in bronze.

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Credit: NASA/SDO

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Protoplasmix
5 / 5 (8) Jan 18, 2016
Spectacular imagery.

Magnetic. Field. Lines. Why, they don't look abstract at all. They look quite real.
cantdrive85
3.2 / 5 (9) Jan 18, 2016
Spectacular imagery.

Magnetic. Field. Lines. Why, they don't look abstract at all. They look quite real.

You must have learned EM theory from an astrophysicist. Of course, what you are seeing is charged matter flowing (electric currents) in circuits which is confined by EM forces (not gravity). We know the "magnetic field lines" by definition are in fact abstract mathematical entities to help visualize the vector field.
RealityCheck
1 / 5 (7) Jan 18, 2016
Hi Protoplasmix. :)
Spectacular imagery. Magnetic. Field. Lines. Why, they don't look abstract at all. They look quite real.
Careful, mate. Magnetic field 'lines' do not 'exist' AS lines per se. They are regions where the magnetic field vortices 'axis of rotations' occur in 'vortex-loop' configurations/phenomena.

Just as in cyclones there exist no 'axial lines' as such, but their 'axis of rotation' forms a 'line of least energy' region towards which the constituent particles are forced by differential pressure, induced drag, etc.

Eg: Bar-Magnet 'field lines' are made 'visible' by use of 'iron filings', these 'lines' don't exist as such, but rather are visible regions where the 'axis of rotation' of the field forms in the dynamics. So it's the 'entrained field constituents' (and any other non-field constituent 'particles' dragged into/along the 'maelstrom' axis) which concentrate around/flow along and 'make visible' those (usually linear) 'axis of rotation' regions. :)
RealityCheck
1.4 / 5 (7) Jan 18, 2016
Hi Vietvet. :)

Mate, that was mainstream known science, not my opinion/alternative view. :)

Have you stopped reading/comprehending again, and upvoting/downvoting based only on the person/prejudice/topic and not on what was actually posted on the science issues?

If so, you lose credibility/respect just as much as any crank/bot-voter would, regardless of which 'side' they are on in the personal/ego 'fueds' which blighted past years.

I would have thought that by now, in this NEW YEAR, we would all have grown older and wiser, not older and stayed as egotistical/prejudiced as in the past.

This is not a game. It's serious discourse. If you have to use the ratings system for your own games despite my posting KNOWN SCIENCE facts to help Protoplasmix/others to avoid misconceptions which still has some thinking that 'magnetic field lines' exist, then what use are you to correcting/advancing scientific knowledge?

Please don't be 'that guy' this NEW YEAR. Thanks. Good luck. :)
my2cts
2.5 / 5 (8) Jan 18, 2016
Spectacular imagery.

Magnetic. Field. Lines. Why, they don't look abstract at all. They look quite real.

You must have learned EM theory from an astrophysicist.

Jumping to conclusions.
Of course, what you are seeing is charged matter flowing (electric currents) in circuits which is confined by EM forces (not gravity).

In short, magnetic field lines. Btw there are no circuits on the sun.
We

Who?

know the "magnetic field lines" by definition are in fact abstract mathematical entities

No they are not. They are force divided by current.
to help visualize the vector field.

Then why not draw the vector field itself.
RealityCheck
1 / 5 (4) Jan 18, 2016
Hi my2cts. :)
Then why not draw the vector field itself.
Actually, way back when, detailed depictions/illustrations used to do that. But then came the 'abstraction convenience' rules and imagery which reduced the detailed reality to minimalistic abstract geometrical/mathematical etc forms/analogies using 'convenient' lines, points etc, but leaving out all the 'real things' comprising THE 'field' between such 'reductionist modeling' lines/points depictions. Hence the current misunderstandings/beliefs re magnetic field lines 'existing' as per those reductionist abstract model 'drawings'. In fact, the 'visible lines' where the entrained material/charges are to be found flowing along a vortex phenomenon's 'axis of rotation' are formed by the streams of visible, entrained material flowing into/along the 'axis of rotation' where the 'lowest energy regions' are to be found in all sorts of 'vortex' phenomena...including in 'magnetic field vortices' flows/dynamics'. Cheers.:)
cantdrive85
2 / 5 (4) Jan 19, 2016
Spectacular imagery. Magnetic. Field. Lines. Why, they don't look abstract at all. They look quite real.

You must have learned EM theory from an astrophysicist.

Jumping to conclusions.
Pretty safe to say he didn't learn EE with that comment.
Of course, what you are seeing is charged matter flowing (electric currents) in circuits which is confined by EM forces (not gravity).

In short, magnetic field lines. Btw there are no circuits on the sun.
Magnetic field lines is a force? Okee dokee! Your circuit comment is almost as stupid as jonesers electrochemistry comment, plain stupid!
We
Obviously not you!
know the "magnetic field lines" by definition are in fact abstract mathematical entities

No they are not. They are force divided by current.
Currents not flowing in a circuit? Brilliant!

EnsignFlandry
5 / 5 (1) Jan 19, 2016
If there are magnetic fields on/in the sun, there are electric currents. See Maxwell, James Clerk.
bschott
1 / 5 (1) Jan 19, 2016
Of course, what you are seeing is charged matter flowing (electric currents) in circuits which is confined by EM forces (not gravity).

In short, magnetic field lines. Btw there are no circuits on the sun.


And here I thought you only provided these gems of wisdom during our talks....I guess I am not special anymore.

Both CD85 (whom I had to rate a 5 because his first comment is accurate) and Ensign Flandry seem to understand what they are talking about. I see you are maintaining your status quo.

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