Polar Night - Types of Polar Night

Types of Polar Night

As there are various kinds of twilight, there also exist various kinds of polar night. Each kind of polar night is defined as when it's darker than the corresponding kind of twilight. The descriptions below are based on relatively clear skies, so the sky will be darker in the presence of dense cloud.

Read more about this topic:  Polar Night

Famous quotes containing the words types of, types, polar and/or night:

    Science is intimately integrated with the whole social structure and cultural tradition. They mutually support one other—only in certain types of society can science flourish, and conversely without a continuous and healthy development and application of science such a society cannot function properly.
    Talcott Parsons (1902–1979)

    He types his laboured column—weary drudge!
    Senile fudge and solemn:
    Spare, editor, to condemn
    These dry leaves of his autumn.
    Robertson Davies (b. 1913)

    Professor Fate: My apologies. There’s a polar bear in our car.
    Arthur Ross. Professor Fate (Jack Lemmon)

    After that came commencement day—that great day for which all other days were made. And it went. And that night I felt of myself all over, and to my astonishment, I found ‘twas the same old Rud. Not a single cubit added to my stature; not a hair’s breadth to my girth. If anything, on the contrary, I felt more lank and gaunt than common, much as if a load were off my stomach.
    Rutherford Birchard Hayes (1822–1893)