shadow bands


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shadow bands

Elongated patches or mottled patterns of light and shadow that have irregular form and movement and are briefly observed to cross rapidly over light surfaces on the Earth just before and after totality in a solar eclipse. They probably result from irregular refraction, in the Earth's atmosphere, of light from the crescent Sun.

shadow bands

[′shad·ō ‚banz]
(astronomy)
Rippling bands of shadow that appear on every white surface of flat terrestrial objects a few minutes before the total eclipse of the sun.
References in periodicals archive ?
Apart from a poor 1925 image, by the 1970s better film emulsions did on occasion record shadow bands.
Shadow bands are alternations of light and dark that glide across the landscape; they're caused by the crescent Sun, or its cusp points, twinkling.
In fact, the cloud provided a thin projection screen so we again recorded shadow bands in the sky although these were not as prominent as at the South Pacific eclipse of 2010.
Mr James first explained that shadow bands, phenomena that have been noted at total solar eclipses since at least the 9th century, are not shadows at all.
Others spotted shadow bands dancing irregularly on the ground a minute or two before totality, their visibility enhanced on the snow.
65A hydrogen-alpha filter and a trip to Zanzibar in 1976 to study shadow bands during the total eclipse of the Sun.
317) reporting imaging of shadow bands on thin cloud during the 2010 total solar eclipse.
I explained about the approaching shadow, falling temperature, shadow bands, the chromosphere and corona, planets and stars to look for, and so forth.
Shadow bands can occasionally be seen as faint, rippling waves on the ground just before 2nd and just after 3rd contact.
Shadow bands are among the most elusive of all eclipse phenomena.
Shadow bands rippled across the sand for ten or twenty seconds before second contact, wider, darker and more sharply defined than those in Libya in 2006.