He sent a wireless to the Cosmopolitan Line Steamers (CLS) headquarters to report the outage but, as Lighthouse Digest reports “CLS failed to notify the Northern Lighthouse Board because “other more pressing matters caused it to escape from memory.”” To make matters worse, Roderick Mac Kenzie, who was also responsible for checking on the light from the Isle of Lewis, did not even notice the light was out.
The Flannan Isles are located 32 km (20 miles) from their closest neighbor, the Isle of Lewis.
Shortly after the one-year anniversary of the lighthouse’s completion, something changed on the quiet little island.
Captain Holman of the steamer Archtor, who was passing by the area on route to Leith, Scotland, on December 15, noticed that the lighthouse’s lamp was not shining.
Research has been ongoing since the 1960s to determine what the proportion of in the atmosphere has been over the past fifty thousand years.
The resulting data, in the form of a calibration curve, is now used to convert a given measurement of radiocarbon in a sample into an estimate of the sample's calendar age.