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There is a similar phenomenon that only happens around the Sun, which is called a Corona (Latin for crown) but this is a HALO or NiMBUS.

A halo (also known as a nimbus or Gloriole) is a ring of light that surrounds an object.

Halos, also known as icebows, are optical phenomena that appear near or around the Sun or Moon, and sometimes near other strong light sources such as street lights. There are many types of optical halos, but they are mostly caused by ice crystals in cold cirrus clouds located 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, similarly to the rainbow.

Sometimes in very cold weather optical halos are formed by crystals close to ground level, called diamond dust. The crystals behave like jewels, refracting and reflecting sunlight between their faces, sending shafts of light in particular directions.

Atmospheric phenomena such as halos were used as an empirical means of weather forecasting before meteorology was developed.

THE PLAY OF THE SAME NAME

was written by the French playwright Jean Anouilh in 1947.

Perhaps because of its parody of upper-class vanity Ring Around the Moon is Anouilh’s most produced play in the United States, where there is a tradition of holding the aristocracy in contempt.

2007-04-30 14:54:13 · answer #1 · answered by Anonymous · 1 0

The old professor says; The ring around the moon occurs when high altitude ice crystals are present in the Earth's atmosphere. It is due to the fact that the moon's light is refracted by the little prisms of ice. The meteorological application here is that these high altitude ice crystals usually preceed an approaching warm front...which means in a few days the sky will be overcast and several days of gentle precipitation will be likely.

It may be called a lunar ring, ice annulus, or halo, or just a ring around the moon.

2007-04-30 14:54:07 · answer #2 · answered by Bruce D 4 · 0 0

The ring around the Moon is caused by the reflection of Moonlight (which of course is reflected sunlight) from ice crystals in the upper atmosphere. The shape of the ice crystals results in a focusing of the light into a ring. Since the ice crystals typically have the same shape, namely a hexagonal shape, the Moon ring is always the same size.

2016-05-17 21:17:52 · answer #3 · answered by ? 3 · 0 0

This shows the presence of ice crystals high in the atmosphere. Light refracts when it goes through the ice crystals, creating a halo around the moon. This is called a lunar rainbow.

2007-04-30 14:58:30 · answer #4 · answered by astronomy713 1 · 0 0

Its caused by tiny ice crystals in the upper atmosphere refracting the moonlight in a ring around the moon. It can happen with the sun as well.
Its usually called "moon dogs" because it usually is 2 or 4 faint blobs of light around the moon, but when its a full ring its usually just referred to as "a ring around the moon".
But there may be another name I'm not familiar with for this phenomenon.

2007-04-30 14:48:15 · answer #5 · answered by Anonymous · 0 2

The presence of a ring around the moon indicates that there are ice crystals high up in the atmosphere.These crystals are the main components of high-level cirrus clouds, which often, (but not always) are the first clouds to appear when a warm front approaches a given area.

2007-04-30 14:48:07 · answer #6 · answered by Anonymous · 1 1

I presume you are referring the the optical effect called an ice annulus - it's formed when moonlight refracts through ice crystals at high altitude.

2007-04-30 14:48:35 · answer #7 · answered by edward_otto@sbcglobal.net 5 · 0 0

Ice crystals in the Earths atmousphere.

2007-05-04 03:56:43 · answer #8 · answered by Anonymous · 0 0

It's usually an indicator that perciptation is likely.

2007-04-30 15:31:18 · answer #9 · answered by Anonymous · 0 0

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