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can someone explain double reversal?

Posted: Wed Jun 12, 2019 12:35 am
by highfnum
I was reading C A Young book the sun 1896

there was a page with this
dblreversyngsm.jpg
dblreversyngsm.jpg (127.48 KiB) Viewed 433 times

Re: can someone explain double reversal?

Posted: Wed Jun 12, 2019 12:37 am
by highfnum
I think (reasonably sure) I replicated this
what does it mean (tell)? books brings it up but no explaination
doubled.JPG
doubled.JPG (16.09 KiB) Viewed 432 times

Re: can someone explain double reversal?

Posted: Wed Jun 12, 2019 5:29 pm
by p_zetner
Hi John.

I replied to your question here:
https://www.cloudynights.com/topic/6645 ... nd-k-line/

I also addressed the nature of the double reversal on the SolarChat forum:
viewtopic.php?f=8&t=12329
(Near the end of the thread.)

Cheers.
Peter

Re: can someone explain double reversal?

Posted: Thu Jun 13, 2019 10:27 am
by highfnum
your item at end of solarchat explains
clearly
also
my photo and yours are similar