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--- public:my_visit_to_south_foreland_lighthouse [2019/08/10 18:41] – [The first international radiotelegraph] fangfufu
+++ public:my_visit_to_south_foreland_lighthouse [2019/08/10 19:50] (current) – [The first electrified lighthouse] fangfufu
@@ Line 12: / Line 12: @@
 ===== The first electrified lighthouse =====
 In December 1858, under the direction of Michael Faraday FRS – the scientific adviser to Trinity House, carbon arc lamps powered by magneto generator was installed in the Upper Lighthouse. Upper Lighthouse thus became the first electrified lighthouse in the world. The experiment continued until early 1860.
 In 1872, the Upper Lighthouse received its own permanent electric installation. A power station was built mid-way between the two lighthouses.
+The tour guide said that these days, you can still find pieces of carbon rod lying around the Upper Lighthouse. The archaeologists initially were not sure what they were. Apparently the previously lighthouse keepers used to throw the burnt carbon rods off the window, so they scattered around the lighthouse.
 ===== The first ship-to-shore radiotelegraph =====
 The first ship-to-shore radiotelegraph transmission was conducted by Marconi and his assistant on Christmas Eve 1898. Marconi sent his assistant to East Goodwin lightship. Nobody remembers what the said to each other.
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 The first message radio message sent internationally was “Greetings from France to England through the ether.” [(http://news.bbc.co.uk/1/hi/entertainment/304466.stm)] The tour guide mentioned that these days people do not use the word “ether” any more, people prefer the word “airwave”. I believe the word “ether” might have deeper meaning. Michelson-Morley Experiment was performed in 1887 [(https://en.wikipedia.org/wiki/Michelson%E2%80%93Morley_experiment)]. Special Relativity was formulated by Einstein in 1905 [(https://en.wikipedia.org/wiki/Special_relativity)]. Therefore, it might be plausible that Marconi believed light travelled through aether.
-Receiving mobile phone signal from France
+==== Receiving mobile phone signal from France ====
 You literally can receive mobile phone signal from France on top of the white cliff. By that I meant your mobile phone can successfully perform a handshake with the cell tower in France. It is rather fitting that everyone can re-enact the amazing feat once performed by Marconi and his assistant, at the same site where it was once performed. Although for a lot of people, whether they want their phone to connect to a French cell tower is outside of their control. In other word, all these amazing re-enactments are performed involuntarily. Personally, I kind of want to visit Wimereux to have at look at what Marconi saw.