This Time Lapse shows the Unique Solar Effect on the Interior Walls and Columns of the Great Reading Room at Burton Barr Library in Phoenix. The 32-foot-high ceiling is held above the space by tensegrity cables attached to the columns and includes round skylights above each column. Inside the blue skylights are smaller clear parts of the glass which Sunlight will pass through illuminating the "candlestick" columns. In "realtime" the Solar effect on the walls is subtle but dramatic. This time lapse clip shows the light streaking down the West wall and then transitioning to the East Wall.
This event occurs at approximately 12:30p.m and only happens when the Sun is directly overhead during the Summer Solstice. Burton Barr Library was designed by Architect Will Bruder
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