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Because the earth blocks you from seeing the full circle. You can use a misting garden hose to make a rainbow, and you'll see it's a full circle.

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15y ago

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Related Questions

Can a rainbow be made in a different shape?

No, rainbows are always in the shape of a circular arc due to the physics of light refraction and reflection in water droplets. The shape of a rainbow is determined by the angle at which sunlight is refracted and reflected in the droplets in the atmosphere.


Is half a circle always called a semi-circle?

Yes, that is the definition of a semicircle.


Is there a end to a rainbow?

No there is Not. Fact: A rainbow is just one big circle. My mother works for American Airlines, we were flying to Orlando, Florida and we flew through one. So no there is NOT a end to a rainbow.


Does a rainbow ever end?

They are circular. Normally people only see fragments of rainbows, but they do make a complete circle. It just depends on your eye sight and the conditions of which the rainbow appears.


A rainbow viewed from an airplane may form a complete circle where will the shadow of the airplane appear?

The shadow of the airplane will appear at the center of the complete circle formed by the rainbow. This is because the shadow is always cast opposite to the direction of the sunlight, and the sunlight is directly behind the airplane when a complete circle rainbow is seen.


What do you call half of a circle?

A semi-circle


What are the antonyms for semi circle?

Circle. That is the opposite of semi circle.


When was The Rainbow Circle created?

The Rainbow Circle was created in 1893.


What name is given to half a circle?

semi circle


What is the base shape of a semi - circle have?

semi-circle


What is the half of a circle called?

A semi-circle the answere is semi-circle or a breve


How many corners in a semi-circle?

A semi-circle is a 180 degree half circle. A semi-circle does not have any corners. A circle does not have corners either. There are points of beginning and end in a semi-circle. In a circle the point of beginning is the same as the ending point.