are rainbows only formed after the rain? explain

Question

anonymous · Answer

yes.. because the drops of water in the atmosphere acts as prisms to disperse the light..

anonymous · Answer

thanks

anonymous · Answer

where's the sun each time a rainbow appears

anonymous · Answer

This is a good question to start thinking about the physical process that gives rise to a rainbow. Most people have never noticed that the sun is always behind you when you face a rainbow, and that the center of the circular arc of the rainbow is in the direction opposite to that of the sun. The rain, of course, is in the direction of the rainbow. 
@fish

amistre64 · Answer

also, how are we defining a rainbow?  I can make a rainbow with a water hose regardless of rain

anonymous · Answer

Author Donald Ahrens in his text Meteorology Today describes a rainbow as "one of the most spectacular light shows observed on earth". Indeed the traditional rainbow is sunlight spread out into its spectrum of colors and diverted to the eye of the observer by water droplets. The "bow" part of the word describes the fact that the rainbow is a group of nearly circular arcs of color all having a common center.   @amistre64

amistre64 · Answer

how is "after the rain" defined?  after it passes and can still be seen?  or after it has quit raining altogether?

anonymous · Answer

What makes a double rainbow?

amistre64 · Answer

2 rainbows fighting over whose turn it is to occupy the space :)

ksaimouli · Answer

it is not only one reason to form the rain bow, i can get the rain bow by prism tooo
the drops acts as a prism and the light will fall on the drops at the angle of 45 this is how the rain bow is formed

anonymous · Answer

rainbow is a practical example that shows white light is made up of seven colors. "VIBGYOR"  . red color is having longest wavelength in this. this phenomena is due to dispersion of light.