Fourier analysis

Fourier's theorem outlined the flow of heat and introduced the concept of using sinusoidal components to break down any periodic function, which became the foundation for the field of Fourier analysis. This work significantly advanced the understanding of heat transfer and laid the groundwork for modern signal processing.
 Jean-Baptiste-Joseph Fourier France 1822 Fourier analysis

Fourier's theorem outlined the flow of heat and introduced the concept of using sinusoidal components to break down any periodic function, which became the foundation for the field of Fourier analysis. This work significantly advanced the understanding of heat transfer and laid the groundwork for modern signal processing.