pse of the sun is at its totality. It
is to see the corona and other surroundings of the sun, in order to
study them, that astronomers go such very long distances--often
thousands of miles--when there is a total eclipse expected, and not
merely to see the eclipse itself. They hope, in time, to learn much from
such observations; but if it happens that the sky is over-clouded during
the period of total eclipse, then all their expense, and the time spent
in preparations and rehearsals of their procedure, are, unfortunately,
entirely wasted.
"Now, M'Allister, if you will take my glass you will be able to look at
the sun and examine it without any risk to your eyesight, for it is
provided with a dark glass to shut out all the dangerous glare. You will
then see what the fringes and inner and outer coronas really are like."
He took the glass and looked for a long time at the sun, and, judging
from his exclamations of surprise and astonishment, he was extremely
interested and delighted with what he saw. John was also examining it at
the same time through his own glass.
Presently the latter turned to me saying, "Professor, I no longer
wonder that astronomers are prepared to travel long distances, and to
risk a great deal of discomfort, and even hardship, in order to view and
study the sun's surroundings. Of course to them it is not merely a sight
to be seen, but the only means by which they can acquire a knowledge of
solar physics. Merely as a sight, however, it is most wonderful. At many
places all round the edge of the sun's disc I can see what look like
coloured flames--pink, pea-green, carmine, orange, or yellow, all in
incessant movement--shooting out at times, or waving and shimmering in a
manner that is indescribable. The changes in form and colour are as
sudden, yet as definite, as the changes produced by turning a
kaleidoscope; while the intermingling of the various colours frequently
produces an effect which I can only compare to the iridescent colours on
mother o' pearl. Then all around and beyond the coloured fringe there is
the light of the pearly inner corona; beyond that are pearly and
violet-tinged rays curling away in both directions from the poles,
whilst outside all are the long, pearly, and violet-tinted streamers
which assume the shape of a large many-pointed star; and even these do
not seem at rest. Though astronomers cannot see all that we do now,
there must be sufficient visible to them to afford opp
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