Anthelion
Definition
A rare atmospheric optical phenomenon, related to halos, consisting of the appearance of a bright spot, white or colored, located in the sky exactly opposite the Sun (at the same altitude above the horizon). This structural phenomenon is caused by the complex refraction and reflection of sunlight rays through hexagonal ice crystal networks suspended in cirrus clouds within the upper troposphere.
Bilingual Equivalents
- Anthelion
- Countersun
Grammatical & Source Details
| Inflection Type | Feminine noun, regular structural plural variations with standard case inflections. |
| Formation | Scientific compound derived from Greek 'anti-' (opposite) and 'helios' (sun), adapted into standard technical lexicon. |
| Spelling / Pronunciation | /æntˈhiːliən/ |
| Source | International Glossary of Atmospheric Physics and Meteorological Standards |
Contextual Usage Examples
RO: Fotograful a reușit să surprindă o antelie spectaculoasă în timpul expediției sale montane din Norvegia.
EN: The photographer managed to capture a spectacular anthelion during his mountain expedition in Norway.
RO: Meteorologii explică faptul că apariția unei antelii este direct condiționată de prezența norilor cirrostratus.
EN: Meteorologists explain that the appearance of an anthelion is directly conditioned by the presence of cirrostratus clouds.
RO: Din cauza luminii parazitare din oraș, acea antelie palidă nu a putut fi observată de pe acoperișul observatorului astronomic.
EN: Due to light pollution in the city, that pale anthelion could not be observed from the roof of the astronomical observatory.
Idioms & Phrases
Antelie luminoasă / Bright anthelion
RO: Punct intens reflexiv ce se formează pe cerul perfect aliniat cu axa geometrică a observatorului.
EN: An intensely reflective spot forming in the sky perfectly aligned with the geometric axis of the observer.
Inel de antelie / Anthelion ring
RO: Arc sau cerc luminos secundar care încadrează uneori punctul contsolar în condiții de umiditate extremă la altitudine.
EN: A secondary luminous arc or circle that sometimes frames the countersun under extreme high-altitude humidity conditions.
Morfologia anteliei / Anthelion morphology
RO: Studiul formei și dispersiei spectrale a luminii reflectate în funcție de orientarea geometrică a cristalelor de gheață.
EN: The study of the shape and spectral dispersion of reflected light based on the geometric orientation of ice crystals.
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