Macula is a kind of astronomy phenomenon that can watch continuously with naked eye.
Of course, be not when can see, want saw with one's own eyes to witness macula, must want when two time, one is early morning, one is the dusk, also have these two time only, your ability is quite orthoptic the sun. And the sun of early morning and dusk is the biggest, also most facilitate we are opposite the observation of macula.
Of course, just wait in early morning or night suffering, it is to wait not to come of macula, the activity of macula is it is certain to have periodic, want to see macula, had better be when of macula active period. Cycle does not consider the activity of macula long not short also, astronomer passes observation discovery, the mobile cycle of macula is 11.2 years about.
In macula active period, if we saw each appears on the sun in early morning or dusk small macula, that is macula undoubted.
Go up from the surface in light of, so called macula is sun surface place actually present the shading that come out. These shading look very small, and very dark, formed bright contrast with the brightness of the sun, but what fact and you see is completely contrary, in fact macula is small not at all, and dark not at all.
We pass each when naked eye place sees small macula, its diameter should surmount the earth, the diameter that has a few small macula even can achieve 2289 kilometers, what concept is this? Want to know, earthly diameter has 10 thousand 2000 much kilometers only, and the diameter of Jupiter also does not cross 140 thousand kilometer just.
Jupiter is the biggest gaseous planet in solar system, the quality of Jupiter compares the others the quality sum of 7 major planet is even large, and the size of a small macula surmounted Jupiter, it is more than 1000 times what reached the earth more.
Is macula so big? Also be not such, also a few compare the black mole with small world, it is these small black mole only we are to cannot pass naked eye to be watched continuously. Macula is a shading it seems that, it is sun surface relative to shadier area, attention, it is opposite only darker, but actually not dark, and also not be black. These small macula that we see, the brightness of any surmounted the any lights that sees in our life, just the sun too too dazzling, foil so that macula is like very dark very black.
Why can sun surface appear macula?
We know the sun has magnetic field, and emerge when strong magnetic field sun surface when, the energy of the sun is delivered got the inhibition of these strong magnetic field, the other area temperature with respect to can opposite Yu Taiyang reduces the extent that so strong magnetic field is in, the average temperature that normally the temperature of these area wants to compare sun face is low above of on 1000 Celsius, microtherm pales with respect to the brightness that brings about these area, also formed the macula that we see.
Since macula is the strong magnetism area of sun surface, whether does the activity meet so many macula generate interference to earthly magnetic field, where is the effect that perhaps produces other kind to the earth? Macula is influential really to the earth, but this kind of influence is not direct.
Frequent macula activity area will be right earthly magnetic field awaits generation to affect compatibly, but exceeded above of 140 million kilometre because of the distance of the sun and earth, so this kind of impact also becomes very small.
? Although macula cannot be caused to the earth quite too too strong immediate impact, can bring a lot of trouble to us through indirect way however. Macula itself is strong magnetism area, appear very easily in these area upper part so solar flare. Solar flare is a kind of strong sun activity, intense solar flare erupts can mix to the orbiter all round the earth directly other spacecraft is caused mar, make communication appears with the equipment that use phone breakdown, break down even, bring huge pecuniary loss thereby. And the germ of this kind of powerful force is macula.
