A solar eclipse is an astronomical phenomenon that occurs when the shadow of the Moon falls on the Earth.  This occurs only when the  is exactly in a straight line between the Sun and the Earth.  Therefore, a solar eclipse occurs only on a new moon day.  A total  occurs when the Moon completely blocks the solar radiation, and partial and annular eclipses .This eclipse occurs only on the new moon day. 

The Moon's orbit around the Earth is inclined by about five degrees.  So most of the days except the eclipse day, the moon's shadow does not fall on the earth.

During a solar eclipse, the Moon's shadow falls only on a few parts of the Earth, making it invisible elsewhere.  Depending on the position of the Earth then, it is possible to predict where the radiation cover will be seen.

Since direct exposure to radiation can damage the eyes, radiation shielding should only be viewed with appropriate protective equipment.  But only the peak of complete radiation coverage can be seen with the naked eye.  Before that it is necessary to know its peak time precisely in advance. 

Total solar eclipse- when the Moon's dark shadow falls on the Earth. During this event, the solar disk is completely obscured.

Annular Occlusion- Occurs when the white  Moon's darkest shadow falls on the Earth.  During this event the center of the radiative plate is obscured and appears as a ring.

Mixed Radiative Occlusion – This type of obscuration can appear either as total absorptiosity or as zonal depending on where it is viewed from Earth.  This happens very rarely.

Partial Eclipse- Occurs when the Moon's outer side falls on the Earth.  A portion of the radiative plate is obscured during this event. 

During the peak of a total gragna  part of the irradiance falling on the Earth is blocked by the Moon.  So then the dimly visible new moon, the halo visible as red spots at its edge, and the faint white corona around it can be seen with the naked eye

A diamond ring event occurs when the peak phase of total eclipse and annular eclipse begins and ends.Generally there is a question why solar gragna  happens.  Although there are many myths and legends about eclipses, scientifically speaking, when the Moon comes between the Sun and the Earth, the Sun is covered by the Moon.  This is the eclipse.

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