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The original was posted on /r/machineporn by /u/Rd28T on 2025-01-02 09:27:31+00:00.

Original Title: The lens of Australia’s most powerful lighthouse - the Cape Byron light. The lens weighs 8 tons and was made by Henry Lepaute, Paris. It contains 760 pieces of highly polished prismatic glass. The lens floats on the ‘immortal bearing’ - a bath of mercury.