
Greenwich, photo by PH Morton

Camera Obscura Image on a table, photo by PH Morton
Camera Obscura – Magic

Summerhouse in the Meridian Courtyard housing the Camera Obscura with doorway with black curtains, photo by JMorton
It was my second time to visit the Camera Obscura, located at the Royal Observatory in Greenwich, South London.
The first time we went which was the autumn of 2013, Peter excitedly insisted that we enter into this building complete with a doorway shrouded in black curtains. Inside was pitch black, as dark as the night.
In the middle of this fairly tiny room, probably 4 square meters (only 6-8 people allowed in at any given time), was a polish table that looked to me like white marble. We all looked at the table and thought there was nothing really special about it. Just an empty table. We went out of the room absolutely perplexed and disappointed, the same look and feel on the other faces that had also gone in and out with us. We were all asking? What was that about?!!!

The lens, Photo by PH Morton
Yesterday was a gloriously warm and sunny day. While at Greenwich Royal Observatory, Peter, Stacey, Nathan and I went into the black shrouded doorway, and on the table was a real-time panoramic projection of an image of Greenwich. People can be seen moving on the projected image. Finally, we understood what this camera obscura was about! 🙂 🙂 🙂
Camera obscura (from Latin words: camera, meaning room, and Obscura, meaning dark) uses a natural optical phenomenon projected from a small hole, a pinhole. This has something to do with physical law that light travels in a straight line. When some of the rays reflected from a bright subject pass through a pinhole, the rays do not scatter but reform to reflect an upside-down image of the subject the rays were reflected from. I wish now that I had paid attention to physics class! 🙂
The Greenwich camera obscura uses a lens for a larger image projection.
Cutty Sark, British Clipper Ship










