ultraviolet
adjEtymology
Etymology tree Proto-Indo-European *h₂el- Latin ūls Proto-Indo-European *-teros? Latin -ter Old Latin -ād Latin -ā Latin ultrālbor. English ultra- Latin viola Old French -ette Old French violettebor. Middle English violet English violet English ultraviolet From ultra- (“beyond”) + violet (“violet”).
Definitions
Of electromagnetic radiation beyond (higher in frequency than) light visible to the human…
Of electromagnetic radiation beyond (higher in frequency than) light visible to the human eye; radiation with wavelengths from 380 to 10 nanometres.
Relating to very high energies or very small distances or time spans.
- A one-loop Feynman graph that represents a virtual process. In the limit in which the virtual process involves short distances or high momenta, one may find an ultraviolet divergence in the corresponding amplitude.
- Some have advocated the search for a new theory of quantum gravity, a theory which does not suffer from ultraviolet infinity problems.
- Since current gravitational observations are insensitive to quantum effects, one may wonder why an ultraviolet completion of the gravity theory is needed if inflation, in fact, occurs several orders of magnitude below the Planck scale.
Ultraviolet colour.
The neighborhood
Vish — recursive loop
A definitional loop anchored at ultraviolet. Each word in the ring is defined by the next; follow the chain far enough and it folds back on itself. Scroll to it and watch.
A definitional loop anchored at ultraviolet. Each word in the ring appears in the definition of the next; follow the chain far enough and it folds back on itself.
6 hops · closes at ultraviolet
curated · pre-corpus. live cycle detection across the full graph is the next major milestone.
sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA