TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

tangent arcs to 22° halo: Luminous arcs tangential to the summit or base of a small halo (22°); their shape vary greatly with the height of the luminary (Sun or Moon) above the horizon.  2, record 1, English, - tangent%20arc%20to%2022%C2%B0%20halo

Record number: 1, Textual support number: 1 OBS

tangent arc to 22° halo: term frequently used in the plural (tangent arcs to 22° halo).  3, record 1, English, - tangent%20arc%20to%2022%C2%B0%20halo

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Arc lumineux, tangent au sommet ou à la base d'un petit halo de 22° et dont la forme varie beaucoup suivant la hauteur de l'astre (Soleil ou Lune) au-dessus de l'horizon.  2, record 1, French, - arc%20tangent%20au%20halo%20de%2022%C2%B0

Record number: 1, Textual support number: 1 OBS

arc tangent au halo de 22°: terme fréquemment utilisé au pluriel (arcs tangents au halo de 22°).  3, record 1, French, - arc%20tangent%20au%20halo%20de%2022%C2%B0

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Arco luminoso tangente a la cima o a la base del halo pequeño(22°). Sus formas varían considerablemente según la altura de la fuente luminosa(el Sol o la Luna) sobre el horizonte.  1, record 1, Spanish, - arco%20tangente%20al%20halo%20de%2022%C2%B0

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

Photometeor of the halo family consisting of two luminous arcs obliquely positioned and which sometimes connect parhelia or paraselenae with the small halo.  4, record 2, English, - arcs%20of%20Lowitz

Record number: 2, Textual support number: 1 CONT

Lowitz arcs are short arcs showing pale colours, which extend diagonally upward and downward from the parhelia to the 22°-halo. They are visible at just very few occasions. The halo is called Lowitz Arc because Thomas Lowitz was the first who observed and described these arcs in 1794 at St. Petersburg.  5, record 2, English, - arcs%20of%20Lowitz

Record number: 2, Textual support number: 1 OBS

The arcs of Lowitz are explained by refraction through the 60° prism of hexagonal plate ice crystals, oscillating as they descend. The principal axis of the plate must oscillate about the vertical by less than 30° to produce the pattern customarily called Lowitz arcs; larger oscillations lead to more complex arcs spreading far above and below the 22° parhelia and halo.  6, record 2, English, - arcs%20of%20Lowitz

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Photométéore de la famille des halos consistant en deux arcs lumineux disposés obliquement et qui quelquefois relient les parhélies ou les parasélènes au petit halo.  2, record 2, French, - arcs%20de%20Lowitz

Record number: 2, Textual support number: 1 CONT

Sur les halos viennent quelquefois s'appuyer des arcs tangents, brillamment colorés. Des arcs peuvent relier les parhélies (et éventuellement les parasélènes) au petit halo : ce sont les arcs de Lowitz.  3, record 2, French, - arcs%20de%20Lowitz

Record number: 2, Textual support number: 2 CONT

Le 18 juin 1790, Tobias Lowitz rapporte un halo solaire compliqué et rare à St-Petersbourg. Là encore, de son dessin émanent des incertitudes quant à la réalité de certains arcs, aujourd'hui appelés : arcs de Lowitz.  4, record 2, French, - arcs%20de%20Lowitz

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Fotometeoro de la familia de los halos con forma de dos arcos luminosos colocados oblicuamente y que a veces enlazan los parhelios y los paraselenios con el halo pequeño.  1, record 2, Spanish, - arcos%20de%20Lowitz

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

White, or mostly white, luminous ring of 22° radius with the luminary at its centre, showing a faint red fringe on the inside and, rarely, a violet fringe on the outside.  3, record 3, English, - small%20halo

Record number: 3, Textual support number: 1 CONT

A small halo of 22 degrees (about the width of an outstretched hand at arm's length) is most common, while a large halo of 46 degrees is less frequently seen.  2, record 3, English, - small%20halo

Record number: 3, Textual support number: 1 OBS

The portion of the sky inside the ring is conspicuously darker than the rest of the sky.  3, record 3, English, - small%20halo

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Anneau lumineux, blanc ou en majeure partie blanc, de 22° de rayon et centré sur l'astre éclairant.  2, record 3, French, - petit%20halo

Record number: 3, Textual support number: 1 OBS

[Le petit halo] présente sur son bord intérieur une frange rouge peu visible et, dans quelques rares cas, une frange violette sur son bord extérieur. La partie du ciel située à l'intérieur de l'anneau est nettement plus sombre que le reste du ciel.  2, record 3, French, - petit%20halo

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Anillo luminoso, blanco o blanquecino, cuyo radio es de 22° concéntrico con la fuente luminosa.  1, record 3, Spanish, - halo%20peque%C3%B1o

Record number: 3, Textual support number: 1 OBS

El halo pequeño muestra en su interior una franja roja débil y en algunas ocasiones una franja violeta exterior. La región del cielo interior al anillo es notablemente más oscura que el resto del cielo.  1, record 3, Spanish, - halo%20peque%C3%B1o

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

Photometeor of the halo family, consisting of two luminous iridescent spots appearing on the parhelic circle, to the right and left of the Sun and at the same height, close to the small halo.  2, record 4, English, - parhelia%20associated%20with%20the%2022%C2%B0%20halo

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Photométéore de la famille des halos consistant en deux taches lumineuses irisées apparaissant sur le cercle parhélique, à droite et à gauche du Soleil et à la même hauteur que l'astre, à proximité du petit halo.  2, record 4, French, - parh%C3%A9lie%20de%2022%C2%B0

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

Fotometeoro de la familia de los halos formado por dos manchas luminosas irisadas que aparecen sobre un círculo parhélico, cercano al halo pequeño, a la derecha y a la izquierda del Sol y a la misma altura.  1, record 4, Spanish, - parhelio%20asociado%20con%20halo%20de%2022%C2%B0

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

Circular halo, with radius of 46°, much less common and always less bright than the small halo. It comprises a faintly luminous ring centred on the Sun or Moon.  1, record 5, English, - large%20halo

Record number: 5, Textual support number: 1 OBS

Haloes are caused by reflection and refraction of light frm the sun or moon by ice crystals in the atmosphere. They may take the form of rings, arcs, pillars or bright spots. The type of halo formed can give information about the type of ice crystals present. Haloes may also be seen in midlatitudes and are normally formed by high, thin clouds.  5, record 5, English, - large%20halo

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Halo beaucoup moins fréquent que le petit halo et toujours moins lumineux que lui; il est constitué par un anneau faiblement lumineux centré sur le Soleil ou sur la Lune, ayant un rayon apparent égal à 46°.  2, record 5, French, - grand%20halo

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 DEF

Halo circular de 46° de radio, mucho menos frecuente y siempre menos luminoso que el halo pequeño. Está formado por un anillo de débil luminosidad de un radio aparente de 46° concéntrico con el Sol o la Luna.  1, record 5, Spanish, - halo%20grande