Condensing Apparatus

“Condensing Apparatus for Steamer’s Side Lights.—By means of this application of the condensing principle all the light can be distributed with strict equality over 112 degrees, which is the arc prescribed for steamers by the Board of Trade. Several of the Transatlantic and other steamers have adopted this kind of apparatus, which is hung on gimbals and placed in iron towers, having an entry from below the deck, which can be made use of in bad weather.” —The Encyclopedia Britannica, 1910

Keywords

lighthouse, deck, ray, light, steamer, arc, Condensing, Condense

Galleries

Miscellaneous Optics

Source

The Encyclopedia Britannica, New Warner Edition (New York, NY: The Werner Company, 1893)

Downloads

TIFF (full resolution)

2400×2308, 512.5 KiB

Large GIF

1024×984, 92.1 KiB

Medium GIF

640×615, 49.6 KiB

Small GIF

320×307, 20.0 KiB