Success is not like a instant coffee. Most of the successes start with failures ex.FOURIER

3.FOURIER  & FOURIER SERIES

>> As a historical note Fourier is a French mathematician com administrator.in French his name pronounced “Fourier”, in English his name Fourier.

>> According to Fourier any type of periodic signals can be expressed with dc component + sum of different sinusoidal waves.

fig.1

                                                                         Fig.2

Generally square wave=fundamental sin wave (H1)+H2+H3+--------+Hn      see in fig.1

But we need to truncate series for easy calculations

Square wave=H1+H2+---+H49         see in fig.2

>>it gave raise to some sort of controversy.

>>based on his work Fourier submitted a paper .but apparently it could not be accepted in a scientific journal, because very eminent mathematician who was the referee seriously objected it

                                                Start with failure

>>in this event Fourier finally published in the form of book.

>>now a days Fourier forms plays a vital role in engineering & science, and is still going to increase their demand in science&engineering.