Augustin-Jean Fresnel
1788 – 1827
Wave optics and the zones used in RF path clearance.
A French engineer and physicist, Fresnel established the wave theory of light in the 1810s and the zone construction that bears his name — the same geometry that determines clearance for radio paths.
The Fresnel-zone tool here uses his zones to size the clearance a radio link needs over an obstacle.
Portrait: a stylized blueprint-line rendering, not a photograph.
Contributions in the toolbox
- 1818
Zone construction in the prize memoir on diffraction.
→ Fresnel Zone Clearance