Queenslanders capture incredible halo around the sun
Queenslanders were been treated to a stunning sun halo on Wednesday afternoon. This is what the experts say.
QLD News
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Queenslanders from right across the state have been treated to a stunning sun halo this afternoon.
Many keen sunset watchers posted the phenomenon to social media on Wednesday, capturing the rarity from as far north as Bedourie in Queensland’s Channel County and as far south as Macleay Island.
In an explainer article, the Bureau of Meterology say haloes are a group of optical phenomena in the form of arcs, rings, pillars or bright spots and are produced by the bending or reflecting of sunlight or moonlight by ice crystals in the atmosphere.
“Haloes form when the sun or moon shines through cirrus or cirrostratus clouds,” it said.
“These high, wispy clouds are made of ice crystals.
“A halo is formed in a similar way to a rainbow: As light passes through the ice crystals its path is refracted (bent).
“The angle of refraction varies from 22° to 50°, and no light is refracted at less than 22°.
“As a result, the observer sees a halo around the light source.
“The inside edge of the circle appears red because red light is refracted less than light of other colours.”
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