penumbral lunar eclipse 中文意思是什麼
penumbral lunar eclipse
解釋
半影月食-
Stars shine - 24 april 2005 penumbral lunar eclipse
觀星樂2005年4月24日月半影食 -
There are three types of lunar eclipse : total lunar eclipse, partial lunar eclipse and penumbral lunar eclipse
月食可分為月偏食月全食及半影月食三種。 -
When the moon totally enters the umbra the full shadow of the earth, it is a total lunar eclipse ; when only part of the moon passes into the umbra, it is a partial lunar eclipse ; as to the penumbral lunar eclipse, it describe a phenomenon when the moon only enters the penumbra the partial or incomplete shadow of the earth
當月球只有部份進入地球的本影時,便會出現月偏食而當整個月球進入地球的本影內時,便會出現月全食至於半影月食,是指月球只是掠過地球的半影區,造成月面的光度極輕微減弱,很難用肉眼發覺有甚麼分別,因此不為人所注意。 -
During a penumbral lunar eclipse, only the apparent brightness of the moon will become dimmer but the limb of the moon will not be obscured by the earth s shadow
在半影月食發生期間,月亮將略為轉暗,但它的邊緣並不會被地球的影子所阻擋。 -
Sometimes the moon only enters the penumbra without touching the umbra. this is a penumbral lunar eclipse
有時月球並不會進入本影而只進入半影,這就稱為半影月食。 -
The next lunar eclipse observable in hong kong will occur on 24 april, 2005 and it will be a penumbral eclipse
下一次在本港見到的月食將在二零零五年四月二十四日出現,這會是一次半影月食。
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