View Down Lighthouse Stairs Showing Lantern Weight
by John Howard/science Photo Library
Title
View Down Lighthouse Stairs Showing Lantern Weight
Artist
John Howard/science Photo Library
Medium
Photograph - Photograph
Description
Lighthouse lantern weight. View down the stairs of a lighthouse showing a lantern weight (centre left). The weight is pulled to the top of the lighthouse and its slow descent powers the lantern's rotation. Lighthouses are used to warn ships of dangerous stretches of coastline. The light from the bulb is focused into a beam which sweeps around in an arc. Each lighthouse has a unique light pattern enabling it to be identified.
Uploaded
February 18th, 2021
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