Re: radiation -> credit card

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

>Date:         Fri, 27 Mar 1998 20:19:13 -0600
>Reply-To: Medical Physics Mailing List <MEDPHYS@LISTS.WAYNE.EDU>
>Sender: Medical Physics Listserver <medphys@lists.wayne.edu>
>From: "Joel E. Gray, Ph.D." <joelgray@M3.SPRYNET.COM>
>Subject:      Re: radiation -> credit card
>X-To:         hong@radonc.ccf.org
>To: Multiple recipients of list MEDPHYS <MEDPHYS@LISTS.WAYNE.EDU>
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>What type of radiation?  If you are concerned about ionizing radiation I
>would recommend the following paper--
>
>Gray JE, Taubel JP.  Effects of ionizing radiation and magnetic fields on
>digital data stored on floppy disks.  Radiology 1993; 189:583-585.
>
>Bottom line-- the magnetic dipoles or domains of recording material, be it
>floppy disks, credit cards, video tapes, etc., are not effected by ionizing
>radiation.  Some reports in the literature indicate that the base material,
>i.e., the polyester tape, is effected before the magnetic information is
>destroyed.
>
>          Joel
>
>Joel E. Gray, Ph.D., Consultant
>2804 Second Street SW, Suite 334
>Rochester, Minnesota 55902
>
>Ph  507-286-8910
>Cell Ph  507-269-4247
>Fax  507-286-8910
>e-mail  joelgray@m3.sprynet.com
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>>         ** Mail from Medphys Listserver **
>>If you reply to this message, it will be posted on Medphys for all the
>>subscribers to review ...
>>
>>
>>Hi, All:
>>
>>A trivial question for the late Friday afternoon: will radiation damage
>>credit cards?  if so, is there a threshold dose?
>>
>>Have a nice weekend!
>>
>>Ray
>