Er this could be daft (and may reflect the fact that I have been out of the loop for a while) but couldn't you use a stroboscope, to test the frequency of flicker or flash? Cheers Graham ===== 'Making on-line information accessible' Phone : +64 9 360 1265 - New Zealand __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.comReceived on Thursday, 27 June 2002 07:11:54 GMT
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