Fresnel's rhomb
nounEtymology
Designed in 1817 by Augustin-Jean Fresnel.
Definitions
A rhombus or oblique parallelopiped of glass cut so that a ray of light entering one of…
A rhombus or oblique parallelopiped of glass cut so that a ray of light entering one of its faces at right angles shall emerge at right angles at the opposite face, after undergoing within the rhombus, at other faces, two reflections. It is used to produce a ray circularly polarized from a plane-polarized ray, or the reverse.
- In Fresnel’s rhomb, whatever be the colour of the light, the retardation of the phase is exactly 90°, or the corresponding retardation in space is exactly ^λ⁄₄ whatever the value of λ may be.
The neighborhood
Vish — recursive loop
No curated loop yet for Fresnel's rhomb. Loops are being traced one word at a time while the ingestion pipeline matures.
sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA