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Re: Red can't be Read



At 11:00 7/22/00 -0400, you wrote:
Are any of you amateur detectives on the side? I have a friend who has
family letters from the 1800's with black ink across the page as you would
expect and for some reason, faded red ink running through the black and
pretty much at a right angle to it. He would like to know how he could
bring out the red writing so it can be read (or red again!).
Thanks, y'all
Tom

Tom McCarthy
Saint Edward's School
1895 Saint Edward's Drive
Vero Beach, FL 32963
561-569-6642
Physics and Astronomy


Off the top / non-destructive.
Take a high definition shot through a plus red filter
illuminated with red light. (1)
Take a similar shot with a minus red filter (2) illuminated
with green light.
Subtract (1) from (2)

Might even pull something useful off, with a graphic scanner.


brian whatcott <inet@intellisys.net> Altus OK
Eureka!