MadSci Network: Other
Query:

Re: Where could I find a whispering gallery?

Date: Wed May 12 08:14:06 1999
Posted By: Tom Cull, Staff, Clinical Sciences MR Division, Picker International
Area of science: Other
ID: 925333587.Ot
Message:

Hi nameless inquisitor,

I looked around on the web for a whispering gallery near the cleveland area and I didn't find one. However there is one in St. Louis at the St. Louis Union Station Mall and there is also one at the Museum of Science and Industry in Chicago.
Probably the most famous whispering gallery in the western world is at St. Paul's Cathedral in London, England. The US Capitol building also has an area that acts like a whipsering gallery.

For those not familiar with a whipsering gallery, the most general form is a room that has an ellipical ceiling. As stated in http://www.cedarville.edu/%7Esellersj/newconics, In rooms whose ceilings are elliptical, a sound made at one focus of the ellipse will be reflected to the other focus (across the room), allowing people standing at the two foci to hear one another very clearly. This has been called the ``whispering gallery'' effect and has been used by many in the design of special rooms. In particular, St. Paul's Cathedral and one of the rooms at the United States Capitol were built with this in mind.

An interesting aside: "whispering gallery" modes are used in miniaturizing lasers and in some microwave transmitters.

Here is a list of links that mention whispering gallery.

  • Photo of a whispering gallery structure
  • A cave in Hocking Hills that acts like a whispering gallery
  • City council room in Coquitlam British Columbia, Canada designed to cancel whispering gallery effect
  • Sincerely,

    Tom "Cannot Whisper" Cull


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