Invisible escreveu:
>>> When I looked at this device, "simple" wasn't what came to mind... ;-)
>>
>> Hehe yes, I'd never have thought you could make a spectrum analyser
>> mechanically!
>
> IIRC there is prior art in this direction - I saw a machine in the
> London Science Museum that does this. Victorian, I think. I forget
> exactly how it works; suffice it to say it seems "obvious" after you've
> been told. ;-)
You mean Charles Babagge's Analytical Machine?
http://www.sciencemuseum.org.uk/images/I031/10301732.aspx
I'm sure you know the importance of Babagge's work that led to today's
computers. And Ada Lovelace...
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