A French dude during Napoleon times was trying to calculate how the heat spread in a metal plate. What could go wrong?
About quarter of millennia later:
- 5G
- mobile phones
- WiFi
- mp3, Photoshop, CGI special effect
- digital oscilloscope, SA, VNA
- MRI, NMR
- crystallography, LHC
- astronomical spectroscopy
- insert almost whatever here ...
The dude's name was Fourier.
![Azn ^-^](https://www.eevblog.com/forum/Smileys/default/azn.gif)