It also had the dual function as lighthouse with a rotating beacon fuelled by oil from 1818.
These beams strike the Earth at very regular intervals, similarly to the way that the rotating beam of a lighthouse means that an observer sees the lighthouse blink, and can be observed as a highly regular series of pulses.
Spread across six floors in a building that once housed newspaper offices, the Lighthouse offers rotating exhibitions (a review of Scottish architecture is currently on display), as well as Form, a store that carries innovative household items.
That speed, together with their extremely strong magnetic fields, causes neutron stars to accelerate charged particles, which emit radio waves in a narrow beam that sweeps across space like the rotating beam of a lighthouse.
As the pulsar rotates, its beam sweeps over the Earth, where it is seen as a regular series of radio pulses, just as a ship at sea observes regular flashes of light from the rotating light in a lighthouse.
A new rotating light system (EMV-3) was installed in 1963, making the lighthouse fully automated.
She has filmed the view from an old lighthouse over the course of one day, and the view from the rotating restaurant at the top of the television tower in Berlin over the course of another.
Two lanterns (created by Wang Chung-Kun) hung from the ceiling, each shielded on one side so that when rotating they swept the darkness with broad patches of illumination, as if from lighthouses.
The island lighthouse was manned by a three-man team (Thomas Marshall, James Ducat, and Donald MacArthur), with a rotating fourth man spending time on shore.
Now positioned 14 miles from the lighthouse it belongs to, the lens stands still in a glass structure next to the Cambria American Legion, rotating only an hour at a time with a much quieter light than that which originally occupied the lens during its time in service.
