![]() It is better than nothing but not near as good as a good purge. The job I am doing now could benefit from a product like this if it worked well enough. If you have any insight on it that would be great. I am just not sure how good that stuff works. Once it dried it was supposed to be like a flux coating to compensate for the lack of shielding gas. It was a powder that we mixed with rubbing alcohol to a past consistency and smeared on the inside of the pipe edge were the weld was going to be. In those cases we would use this stuff called solar flux, at least I think that is what it was called. In some tight cases we could not back purge because the plant engineers would not let us shut down that particular system enough to allow us to purge it. My question: I was a pipe fitter/welder for a couple years at a corn sweetener plant. I have been welding for about 15 years and I am still learning new things all the time. Thanks for all the wonderful and helpful info. More details can be found in this paper which is available at Researchgate.I really love the site. More specific clues point to November 2018 as the start of solar cycle 25. November 2018 had the lowest flux value till now, and therefore the new cycle can start in a time frame from October 2018 till February 2019. For instance the month with the lowest flux value can give as a clue, because it is close to the start of a new cycle. However, we found more relationships to find the start of a new cycle. ![]() Normally you have to wait at least 6 months before we know when a new sunspot cycle has started. 10.7cm radio flux values (sfu): Penticton, B.C., Canada. The peaks are exactly at the start of a new cycle. This gave us a nearly 100 % correlation with the start of a new sunspot cycle:įigure 2. Our research delivered a surprising relationship, at the low of the cycles, between the fitted adjusted flux divided by the fitted sunspot number. For instance, we calculate a sunspot number from 1 while it is 3, a 300 percent difference. Strangely enough there is huge differences at the low of the cycles. The blue values were calculated from the 10.7 cm radio flux and fit relatively well with the observed sunspot number (red) Source: S.I.D.C. It looks like this:įitted sunspot number (blue) vs monthly mean sunspot number (red)įigure 1. We found a new formula (there is currently none), to calculate the sunspot number from the radio flux. There exists a relationship between the solar 10.7 cm radio flux (F 10.7 index) and sunspots. It is one of the longest running records, provides solar activity over six solar cycles, and has proven very valuable in forecasting space weather. ![]() The F10.7 radio emissions measurements are completely objective, because they can be made in all types of weather. The 10.7 cm solar radio flux, which originates high in the chromosphere of the Sun and low in the corona of the solar atmosphere, is an excellent indicator of solar activity. We found it already started in November 2018. Therefore many astronomers think cycle 25 will start late 2019. How did he came to this conclusion? Keep reading to find that out. Patrick claims that Solar Cycle 25 started in November 2018. At this moment he is working with Jan Alvestad from Solen on an article: “High Resolution Sunspot Calculations.” He hopes to makes his breakthrough with his prediction about the start of Solar Cycle 25. He has currently published 3 articles on Researchgate. Patrick does research in astrophysics, especially everything related to the Sun. Following our previous guest post regarding the upcoming Solar Cycle 25 we have yet another guest post.
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