Chronometers – timekeeping, longitude & latitude

John Harrison's Marine Chronometers , http://vimeo.com/67741035The invention of a marine clock (chronometer) which could be used to accurately measure longitude was arguably the most significant development in maritime navigation in the seventeenth and eighteenth centuries. Before their invention ships had great difficulty finding their way from one port to another. Fog, bad weather, and inaccurate charts … Continue reading Chronometers – timekeeping, longitude & latitude

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Australian Photogrpahy – Freeman Brothers Sydney

Unidentified man, from collodion negative, Freeman Brothers Studio, 1871-1880, Powerhouse Museum, H8504-22 Over the last couple of months I have been working on a previously uncatalogued collection of large format, 50.8 cm x 44.5 cm, glass plate negatives donated to thePowerhouse Museum in 1969. The 28 collodion portraits were found in a chest in our stores at … Continue reading Australian Photogrpahy – Freeman Brothers Sydney

19th Century Photography – The Samoan War 1899

U.S. Marines with naval gun, Upolu, Samoa, 1899, published by Kerry and Co Tradition in Samoa dictated that leadership of the islands was to be invested in a hereditary chief, but in the 1880s these claims to power were anything but certain. Robert Louis Stevenson, who lived in Samoa during this period of turmoil, commented that … Continue reading 19th Century Photography – The Samoan War 1899