Re: [Phys-l] Some recommendations please

[Bernard Cleyet <bernardcleyet@redshift.com>]

Oh, Bryan,  I meant copying the Lyons book.

bc


On 2009, Jun 03, , at 16:17, Brian Whatcott wrote:

> Ah yes, of course. It turns out that expensive though they were, the
> early color copiers fostered a cottage industry in fake $100 bills.
> The paper was an issue - so the more enterprising bleached low
> denomination bills for the purpose.
> In turn, the color copier makers like Xerox arranged a natural size
> reduction of a few percent in a copy, and the Treasury adopted some of
> the clockwork to which the Europeans had already resorted (perhaps  
> with
> experience of the WWII psych war gambit of flooding the enemy with  
> good
> quality forgeries?)
>  Local stores use a test stick to look for an inappropriate color  
> stripe
> reaction, as a bill test, these days.
>
> Brian W