n. (pl. -brae ) 1.陰影;【無線電】本影;暗影;(太陽黑子的)中央暗黑部。 2.(古羅馬)隨客來的不速之客;〔罕用語〕幽靈。adj. -l
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This is a lighter area between the umbra and the edge of a shadow . 這是本影和陰影邊緣之間較亮的區域。 This includes the continuous survey of umbra and penumbra of the sunspot . 這包括對太陽黑子本影和半影持續的觀測。 If only part of the moon surface is in the umbra , there will be a 如果只有部分月球進入本影,則為 ( near umbra ) : the spirit world surrounding the gaia realm 近影界:在蓋亞區域外圍所環繞的精神世界。 Therefore , if the moon is in the umbra , there will be total lunar eclipse 所以,當月球完全進入了地球的本影,便會發生 Total eclipse begins : instant of first internal tangency of moon with the umbra 食既:月球進入地球本影,并與本影第一次內切。 Moon leaves umbra : instant of last external tangency of the moon with the umbra 復圓:月球逐漸離開地球本影,與地球本影第二次外切。 Total eclipse ends : instant of last internal tangency of the moon with the umbra 生光:月球在地球本影內移動,并與地球本影第二次內切。 Moon enters umbra : instant of first external tangency of moon with the umbra 初虧:月球由東緣慢慢進入地影,月球與地球本影第一次外切。 The scent of the dark umbra clings to them , adding to the eerie mystery that shrouds them 暗影界影響緊隨著他們,帶給他們怪誕的神秘氣息。
a region of complete shadow resulting from total obstruction of light
The umbra, penumbra and antumbra are the names given to three distinct parts of a shadow, created by any light source. For a point source only the umbra is cast.
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