File:Circumzenithal arc time-lapse.ogv
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Size of this JPG preview of this OGG file: 800 × 450 pixels. Other resolutions: 320 × 180 pixels | 640 × 360 pixels | 1,280 × 720 pixels.
Original file (Ogg Theora video file, length 1 min 9 s, 1,280 × 720 pixels, 7.75 Mbps, file size: 63.7 MB)
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Summary
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Italiano: Parziale "arco circumzenitale" verificatosi in un pomeriggio primaverile (ore 17:40 locali). In basso a sinistra, pochi secondi dopo l'inizio del video, appare un debole "arco sopra laterale", fenomeno ottico atmosferico abbastanza raro.
Si notano bene le nubi cirriformi (biancastre, trasparenti) situate ad alta quota, i cui cristalli di ghiaccio sono responsabili del fenomeno ottico. Nubi cumuliformi (grigiastre e opache) poste a quote inferiori, avanzano lentamente nella stessa direzione dei cirri, coprendo l'arco. English: Circumzenithal arc (an optical phenomenon similar to a rainbow, but actually a halo caused by refraction of sunlight through ice crystals) during a spring afternoon (17:40 local time) and faint supralateral arc at few second after time-lapse start |
| Date | |
| Source | Own work |
| Author | Daniele.Brundu |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
|---|
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[edit]I, the copyright holder of this work, hereby publish it under the following license:
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:02, 12 April 2015 | 1 min 9 s, 1,280 × 720 (63.7 MB) | Daniele.Brundu (talk | contribs) | Fast motion (2x), better quality and uninteresting section removed | |
| 16:35, 9 April 2015 | 4 min 45 s, 1,280 × 720 (81.91 MB) | Daniele.Brundu (talk | contribs) | User created page with UploadWizard |
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