Engvold's book

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Averton
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Engvold's book

Post by Averton »

By luck we found Engvold's book on Amazon with the look inside option providing the whole of the chapter on prominence classification :)
https://www.amazon.com.au/Solar-Promine ... 3319357034
We have checked it a couple of times and it seems that every time you can see the chapter we are after - it is definitely worth looking at and a step forward.
It turns out that the picture Alexandra posted from the book is actually an historical categorisation system by Pettit from 1932.
It also indicates that it is common practice today to categorise prominences into three categories Quiescent, Intermediate (combined) and Active Region Prominences. It turns out that the Wikipedia article was correct. In addition, these three categories follow the three types of Magnetic Neutral Lines (MNL). This all makes a whole lot more sense.
We think that this small extract should be within copyright limits.
page extract.png
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Re: Engvold's book

Post by rigel123 »

Whoa, that is one pricey book!


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Re: Engvold's book

Post by Averton »

rigel123 wrote: Thu Jan 12, 2023 2:58 am Whoa, that is one pricey book!
Too right!
We have not bought the book but the Amazon look inside preview happens to have the whole chapter on prom categorising which you can read (not sure if we should mention this but if you can read it you can .... its all yours). A nod's as good as a wink to a blind bat.
It is definitely worth a read if you can.


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Re: Engvold's book

Post by JonnyMegaPower »

There is a lot of free knowledge and reading there, thanks for the heads up Clare & Peter It only fitting my first post in solar chat would be on your thread. My wife stills enjoys my orange suns. Thanks again for the tips and knowledge.


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Re: Engvold's book

Post by DeepSolar64 »

Clare & Peter,
I hope you two are ok. I have not seen you online in awhile.

James


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