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Spent time at the Royal Observatory at Greenwich where we stepped on the Greenwich Meridian line and contemplated time looking at various clocks and telescopes through the ages.
We also went inside the walk in Camera Obscura, which is a giant “pin hole camera”. Since it was "aimed" at the River Thames area, it showed pedestrians, cars, trucks ... ok lorries ... and Thames river cruisers. Kind of like an ancient video camera. Only no replay nor audio.
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