日晷 the Sundial2017-07-26
日晷 the Sundial
Time: In the period of Red Chamber
Location: North of Foreign Language Building
Category: Stone inscription
Sundial is located between the Sackler Art Museum and Foreign Language Building, made by white marbles, 3 meters high, which consists of a big base, body and sundial. The body was carved with words clockwise from north. This sundial in YanYuan is the equatorial sundial, one of various kinds of sundials. This kind of sundial consists of plate and needle, the needle is in the center of the plate and perpendicular to it, whose direction is celestial North Pole. The plate of equatorial sundial is parallel to the equatorial plane while the needle is parallel to axis of the earth. The angle of the needle and the horizon is the latitude of Beijing. Because the school buildings are 5°49′west, if the sundial base was located due north, the buildings and streets will be slant, inharmonious with the whole building. So for the aim of art harmony, the base is located to the direction of the building.
It was placed in front of the red tower, after 80’s it was moved to the east lawn. In 1992 when the Sackler Art museum constructed, it was moved here and its plate and needle were recovered, aiming to form a harmonious rhythm. But now the needle is missing.