Re: cosmic rays

[BERNARD L COHEN <blc+@PITT.EDU>]

	All natural radiation strikes an average person's body about

15,000 times per second. Cosmic rays account for less than 1/4 of this, or

about 3500 times per second.



Bernard L. Cohen

Physics Dept.

University of Pittsburgh

Pittsburgh, PA 15260

Tel: (412)624-9245

Fax: (412)624-9163

e-mail: blc@pitt.edu





On Thu, 26 Sep 2002, Peter Sandgren wrote:



> Dear Radsafers,

> 	I heard on the radio (NPR, I believe, ) some time ago that the human body

> is hit by cosmic rays approx. 10,000 times each second.  And that cosmic

> radiation in the form of  subatomic particles impacts the earth at the rate

> of 1 / sq cm / second.

> Can anyone tell me if these numbers are reasonably correct, or at least in

> the ballpark?  Thanks.

>

> Peter Sandgren

> Training Division

> GIS Operations

> Connecticut Office of Emergency Management

>

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