Tag: Greenwich

Camera Obscura – Magic

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

Cutty Sark, British Clipper Ship

Cutty Sark in its heyday was the fastest ship because of hull shape and vast sail area.  It sailed for more than 957,991 nautical miles which is equivalent to going to the moon and back 2 and a half times. 🙂

Beautifully maintained ship and the information provided were entertaining and interesting. There were a lot of interactive activities and the guides were all friendly and very accommodating. The place is perfect for school children to learn about the life aboard a vessel in the middle of the ocean.

Jean Morton review on Cutty Sark Facebook page

The Cutty Sark was built in Clyde, Scotland in 1869 originally to be a tea clipper, traveling from London to China and back, until the arrival of the even faster steamships. The Cutty Sark then started carrying wool from Australia to London.

The Cutty Sark continued being used as a training ship until the 1950s.

In 1954, it was permanently lodged in Greenwich, South London, as a public display and museum. It is now a National Historic ship being only one of the three remaining shipping vessel with its original composite construction, where the wooden hull was framed in iron. Copper was used a great deal in the making of the Cutty Sark. Apparently, the copper prevents barnacles attaching themselves to the ship.

Peter, Stacey, Nathan – our intrepid grandson and I enjoyed our tour of the Cutty Sark.  The weather yesterday was perfect to see the ship.  It was bright and glorious.  There was plenty to do and to see.

It was a wonderful piece of history. Long it may be preserved for posterity.