(sumber)
Subhanallah. lingkaran pelangi bulat di langit, fenomena yang dipanggil lingkaran pelangi halo (LINK)
pernah berlaku di Ipoh dan di seluruh dunia., hanya Allah sahaja yang
tahu. fenomena pelangi halo ini memang amat memukau mata yang memandang.
Bagaimana pula dengan pelangi di puncak Gunung Everest ini ? (LINK).
P/S: Melihat pemandangan alam dan memikirkan kebesaran Allah SWT dapat menghasilkan pahala dan kedamaian di hati. InsyaAllah.
Dalam
amalan pemerhatian cuaca, kewujudan halo merupakan antara petunjuk yang
boleh diguna untuk meramal hujan atau ribut petir dalam tempoh 12
hingga 24 jam, terutama jika ia diikuti awan jenis pertengahan. Lapisan
awan cirrostratus sangat nipis sehinggakan matahari atau bulan boleh
dilihat dengan jelas melaluinya, tetapi kadang-kadang matahari atau
bulan juga boleh kelihatan sebagai bayangan malap melalui lapisan awan
yang tebal
Apabila cahaya matahari atau cahaya bulan melalui kristal ais (awan cirrostratus) , cahaya tersebar atau dibiaskan yang menyebabkan halo terbentuk.
Orang ramai yang ingin melihat halo perlu memastikan kedua-dua mata dilindungi daripada pancaran matahari
Adalah
diingatkan supaya berhati-hati apabila mengambil gambar halo tanpa
pelindung matahari kerana ia sangat berbahaya terutamanya ketika
menggunakan kamera Single-lens reflex (SLR)
Read more: http://www.enciknakal.com/2012/04/fenomena-halo-berlaku-di-alor-setar-kedah.html#ixzz225nJScGm |
A halo (also known as a nimbus, icebow or Gloriole) is an optical phenomenon produced by ice crystals creating colored or white arcs and spots in the sky. Many are near the sun or moon but others are elsewhere and even in the opposite part of the sky. They can also form around artificial lights in very cold weather when ice crystals called diamond dust are floating in the nearby air.There are many types of ice halos. They are produced by the ice crystals in cirrus clouds high (5–10 km, or 3–6 miles) in the upper troposphere. The particular shape and orientation of the crystals is responsible for the type of halo observed. Light is reflected and refracted by the ice crystals and may split up into colors because of dispersion. The crystals behave like prisms and mirrors, refracting and reflecting sunlight between their faces, sending shafts of light in particular directions.Atmospheric phenomena such as halos were used as part of weather lore as an empirical means of weather forecasting before meteorology was developed.Other common optical phenomena involving water droplets rather than ice crystals include the glory and the rainbow.
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