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TANGENT ARC [1 record]
Record 1 - internal organization data 2004-09-13
Record 1, English
Record 1, Subject field(s)
- Atmospheric, Climatic and Meteorological Phenomena
Record 1, Main entry term, English
- tangent arc
1, record 1, English, tangent%20arc
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An arc of light tangent to a halo. It forms by refraction of light through ice crystals. 2, record 1, English, - tangent%20arc
Record number: 1, Textual support number: 1 CONT
A tangent arc is a patch of bright light that is occasionally observed along a halo. This occurs when sunlight is refracted by falling hexagonal "pencil-shaped" ice crystals whose long axes are oriented horizontally. 3, record 1, English, - tangent%20arc
Record number: 1, Textual support number: 2 CONT
tangent arcs. ... The most common of these are the upper and lower tangent arcs to the halo of 22°. They form separate arcs when the sun is low, but as the sun climbs they join to produce the circumscribed halo. These arcs are explained by refraction through the 60° prism sides of columnar crystals oriented with their long axes horizontal. 4, record 1, English, - tangent%20arc
Record number: 1, Textual support number: 1 PHR
tangent arc to 22° halo, to 46° halo. 5, record 1, English, - tangent%20arc
Record number: 1, Textual support number: 2 PHR
22° upper, 22° lower, lower, upper tangent arc. 5, record 1, English, - tangent%20arc
Record 1, French
Record 1, Domaine(s)
- Phénomènes météorologiques, climatiques et atmosphériques
Record 1, Main entry term, French
- arc tangent
1, record 1, French, arc%20tangent
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
On répertorie également dans les halos de nombreux phénomènes optiques plus rares. [...] Les arcs tangents sont de courts arcs lumineux partant soit de la base ou du sommet du petit halo, soit (en un couple symétrique) de la demi-circonférence inférieure du grand halo. 1, record 1, French, - arc%20tangent
Record number: 1, Textual support number: 1 PHR
Arc tangent au halo de 22°, au halo de 46°; inférieur, supérieur. 2, record 1, French, - arc%20tangent
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Fenómenos meteorológicos, climáticos y atmosféricos
Record 1, Main entry term, Spanish
- arco tangente
1, record 1, Spanish, arco%20tangente
masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 PHR
Arco tangente al halo de 22°, al halo de 46°, superior. 1, record 1, Spanish, - arco%20tangente
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