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Observatory Attractions In San Francisco

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San Francisco , officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. San Francisco is the 13th most populous city in the United States, and the 4th most populous in California, with 884,363 residents as of 2017. It covers an area of about 46.89 square miles , mostly at the north end of the San Francisco Peninsula in the San Francisco Bay Area, making it the second most densely populated large US city, and the fifth most densely populated U.S. county, behind only four of the five New York City boroughs. San Francisco is also part of the fifth most populous primary statistical area in ...
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Observatory Attractions In San Francisco

  • 1. Camera Obscura San Francisco
    Camera obscura , also referred to as pinhole image, is the natural optical phenomenon that occurs when an image of a scene at the other side of a screen is projected through a small hole in that screen as a reversed and inverted image on a surface opposite to the opening. The surroundings of the projected image have to be relatively dark for the image to be clear, so many historical camera obscura experiments were performed in dark rooms. The term camera obscura also refers to constructions or devices that make use of the principle within a box, tent or room. Camerae obscurae with a lens in the opening have been used since the second half of the 16th century and became popular as an aid for drawing and painting. The camera obscura box was developed further into the photographic camera in t...
    From Wikipedia, the free encyclopedia.
  • 2. Morrison Planetarium San Francisco
    The California Academy of Sciences is a research institute and natural history museum in San Francisco, California, that is among the largest museums of natural history in the world, housing over 26 million specimens. The Academy began in 1853 as a learned society and still carries out a large amount of original research. It is California's oldest museum. Completely rebuilt in 2008, the building covers 400,000 square feet . The primary building in Golden Gate Park reopened on September 27, 2008.
    From Wikipedia, the free encyclopedia.

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