[softwarelist] Re: PNG in DPscan

In message <khpjxYGE4QlHFwJs@xxxxxxxxxxxxxxxxxxx>, David Pilling <flist@xxxxxxxxxxxxxxxxxxx> writes
resolution, according to Windows viewer it is: 16899208 dpi in both X and Y directions.
It occurred to me that they may be scanning microfiche or something. So lets look at that number: 

16,899,208
pixels per inch.
The wavelength of visible light is about 500 nanometres which translates to 50,000 per inch. 

An atom is about 0.1 nanometeres which translates to about
250,000,000 per inch

I think they're dud values...



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