“umbra”簡單造句，umbra造句子

7、During the eclipse, the best viewing in North America found the coppery lunar disc high in a cold winter sky, the Moon reddened by light filtering into the Earth's dark central shadow or umbra.

4、This is a lighter area between the umbra and the edge of a shadow.

2、umbra and penumbra of sunspot

1、last contact of umbra

3、a fringe region of partial shadow around an umbra.

6、Partial solar eclipses occur when the Moon's penumbra touches Earth; partial lunar eclipses occur when the only part of the Moon passes through Earth's umbra.

5、This includes the continuous survey of umbra and penumbra of the sunspot.