A Study About The Sun (abstract; English)

We have made, in this quarter, some studies about the rotation of the Sun and the times of it. These aren't completed, although they are nearly concluded.

The reason to do this investigation, aside of the fact that it is a school project, is that furthermore, it is interesting and can help with the topic of our project, and it can contribute to future investigations about the Sun. But in what way? Well, to investigate this star, they would have to approach it, but it is difficult due to solar winds. Knowing the Sun's rotation time, perhaps they could determine this winds' periods. To find out the Sun's rotation time, we observed the behaviour of a sun spot during a certain period of time (more specifically, from October 21st to October 30th) and we tried to calculate and see the distance the spot would scour in one day, helped by a template. After determinating it, we calculated how long would it take the spot to scour one of the halves of the sphere, and multiplied this per two, to know the rotation time. We concluded it was forty eight days. 

This was surprising, due to the fact that our first hypothesis was twenty four million hours, which would be one million days. 

But our final result wasn't right either, even though it was close to the right one: 25-36 days.

This difference of results could have been due to the fact that the Sun doesn't rotate at the same speed in all of its points, it rotates faster in the equator than in other parts. We used only the data and dates they gave us and sometimes a calculator. No other sources were used (encyclopedias, Internet, etcetera) apart from the given sheets.

To conclude, the objectives of the studies, although we didn't expect these results at all and they weren't close to the initial hypothesis, we finished the project.

(These are the graphics:)