Word of the Day

Dewpoint temperature

The temperature to which a given parcel of air must be cooled before it becomes saturated; the temperature of an object when dew first forms on it.

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    Cubit

    18 inches; derived from distance between elbow and tip of middle finger.

    What is the origin of the word "blizzard"?

    It may have come from the German word blitzartig, meaning "lightninglike." The first documented use of the word "blizzard" as a reference to weather appeared in an Iowa newspaper in 1870. The article referred to a fierce snowstorm that had stared on March 14 of that year.

    Precession

    The slowly changing position of the stars and equinoxes in the sky resulting from variations in the orientation of Earth’s axis.

    Alaska

    Alaska's name comes from an Aleut word meaning "great land."

    Barometer

    An instrument used to measure air pressure; there are two basic types, aneroid and mercury.

    Precession

    The slowly changing position of the stars and equinoxes in the sky resulting from variations in the orientation of Earth’s axis.

    Lenticular Cloud

    Lenticular clouds are only seen around mountains. These strange clouds are easy to spot, because they look like flying saucers or a stack of pancakes. Their most interesting characteristic is that they don't move. Winds blow right through them, while other clouds are swept away.

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