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Hewlett, however, in 1894, after thirty years of work, showed that the spots are not always depressions, being very subject to disturbance. The Kew photographs contributed a vast amount of information about sun-spots, and they showed that the faculae generally follow the spots in their rotation round the sun.
As he dropped into one of the close lanes which led up to Wrexby Hall, he saw Rhoda standing under an oak, her white morning-dress covered with sun-spots. His impulse was to turn back, the problem, how to speak to her, not being settled within him.
Her limbs were more delicately proportioned than is usual among women accustomed to manual labour from childhood. The rosy glow of health lit up her brown but clear cheek, free from freckles and sun-spots. Her eyes, black as sloes, were fringed with long dark eyelashes which gave their glances an espiègle expression. They were very wicked-looking eyes, full of fun and mischief.
Nothing very definite came of his efforts in this direction, the subject being far too complex to be determined without long periods of observation. Latterly, however, meteorologists, particularly in the tropics, are disposed to think they find evidence of some such connection between sun-spots and the weather as Herschel suspected. Indeed, Mr.
But this view, though countenanced by Ångström, and advocated by Hastings of Baltimore, and other authorities, is open to grave objections. In Faye's theory, sun-spots were regarded as simply breaks in the photospheric clouds, where the rising currents had strength to tear them asunder.
They are notably the theory that there is a direct causal association between the prevalence of sun-spots and terrestrial weather; the theory of the meteoritic origin of all members of the sidereal family; and the dissociation theory of the elements, according to which our so-called elements are really compounds, capable of being dissociated into simpler forms when subjected to extreme temperatures, such as pertain in many stars.
The conclusion is that spots on the sun and magnetic storms are due to the same cause. This cause cannot be any change in the ordinary radiation of the sun, because the best records of temperature show that, to whatever variations the sun's radiation may be subjected, they do not change in the period of the sun-spots.
As he dropped into one of the close lanes which led up to Wrexby Hall, he saw Rhoda standing under an oak, her white morning-dress covered with sun-spots. His impulse was to turn back, the problem, how to speak to her, not being settled within him.
If we accept the theory, it would appear that we ought to congratulate ourselves that the inclination of the sun's equator is so slight, for as things stand the earth is never directly over the most active regions of the sun-spots, and consequently never suffers from the maximum bombardment of charged particles of which the sun is capable.
But the result, so far, has been to negative the ascription to them of any systematic direction. Uprushes and downrushes are doubtless, as Father Cortie remarks, "correlated phenomena in the production of a sun-spot"; but neither seem to predominate as part of its regular internal economy. The same kind of spectroscopic evidence tells heavily against a theory of sun-spots started by Faye in 1872.
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