In a primary rainbow, the arc shows red on the outer part and violet on the inner side To be scientifically correct, a rainbow is not an object but an optical illusion This rainbow is caused by light being refracted when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it.
What Is the Rainbow Color Order? Understanding ROYGBIV
What causes a rainbow, why is it curved
What are the rainbow colors, how does a double rainbow work, and what's at rainbow's end?
Rainbow, series of concentric coloured arcs that may be seen when light from a distant source—most commonly the sun —falls upon a collection of water drops—as in rain, spray, or fog The rainbow is observed in the direction opposite to the sun. The colors of the rainbow originate from sunlight’s visible spectrum and always appear in the sequence of red, orange, yellow, green, blue, indigo and violet. A rainbow is caused by sunlight and atmospheric conditions
Light enters a water droplet, slowing down and bending as it goes from air to denser water When light exits the droplet, it makes a rainbow. It takes both the sun and rain to make a rainbow To put it plainly, rainbows are produced by sunlight entering water droplets, bouncing around each individual bead of water, and changing direction (refracting) to reflect off the back of the droplet to return back toward us.
A rainbow is an optical illusion —it does not actually exist in a specific spot in the sky
The appearance of a rainbow depends on where you're standing and where the sun (or other source of light) is shining. Put simply, a rainbow is caused by interaction between sunlight and atmospheric water This most commonly means raindrops, but mist and spray can also cause rainbows.
