Halos result from the refraction or reflection of light by ice crystals suspended in the atmosphere 日晕是由悬浮在大气中的冰晶对光的折射或反射而引起的。
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Halo in the form of ring over chek lap kok on 17 april 2003 photo : courtesy of mr . c . s . yuen 二零零三年四月十七日赤?角上空出现环状的日晕图片由袁仲升提供
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The picture shows a special optical phenomenon called halo , seen over chek lap kok on 17 april 2003 相片显示二零零三年四月十七日赤角上空出现一种名为日晕的光学现象。
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The picture shows a special optical phenomenon called halo , seen over chek lap kok on 17 april 2003 相片显示二零零三年四月十七日赤?角上空出现一种名为日晕的光学现象。
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The website also contains images of interesting atmospheric optical phenomena , such as halos , together with explanatory notes 网页内也包括了一些全域观天仪摄得的大气光学现象，例如日晕，并附有解说。
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The special phenomenon , according to scientists , is a solar halo , or " mock sun " , which results from the refraction of ice crystal particles contained in clouds 对这种奇怪的现象，科学家解释说，这是由于云层中极小的小水珠的反射而引起的，那个虚幻的太阳是日晕。
