John Hernlund wrote:
> John,
> 
> Thanks for pointing this out.
> 
> Hint for answer: Earth is spherical, not circular...
> 
> Cheers!
> John
> 
> On Thursday, January 6, 2005, at 11:10 AM, John or Jan Lahr wrote:
> 
>> If you haven't taken a look at the IRIS "Image of the Week" yet,
>> check out this page (with the now correct URL!):
>> http://www.iris.edu/about/ENO/iow.htm
>>
>> The image shows seismic records from stations distributed around
>> the globe and surface waves that traveled twice around!
>>
>> Questions to think about --  Why does the y-axis stop at 180 degrees?
>> Why would the amplitude of the surface waves fall off around 90 degrees
>> and then increase at 180 degrees again?
>>
>> Cheers,
>> John

Hi folks,

If you have access to a room with a dome, go there with a friend, take up 
positions on opposite sides, and whisper.

Mark Robinson
-------------
07 Jan 1924 George Gershwin composes Rhapsody in Blue.
07 Jan 1952 Ike offers to accept GOP Presidential Nomination.
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