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Re: 1994 article

Original poster: "Antonio Carlos M. de Queiroz" <acmdq@xxxxxxxxxx>

Tesla list wrote:

Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx> 

Do you know when complex (real and imaginary) analysis was first commonly
used on such problems?


Phasor analysis was developed essentially by Charles Proteus Steinmetz,
that published the first description of the method by 1893.

I did a Google and was surprised that Mr. Laplace presumably the inventor
(or did he discover) of Laplace Transforms lived 1749-1827.
Almost 200 years ago !!!!


It's not clear to me from where the use of Laplace transforms in
circuit theory come. It may have been just an application of
a known method to linear circuits, or a reinvention, later recognized
as being something already known. I think that the use of Laplace
transforms in circuit theory become common practice from around
1924, with the work of R. M. Foster about reactance synthesis,
but it was probably used before.

Antonio Carlos M. de Queiroz