Unfortunately, it's impossible to accurately measure a rainbow's radius. Rainbows are simply refracted light, and if you tried to get to the "base" of one, it would disappear before your eyes. You could, however, guesstimate if you knew the distance between two landmarks at the approximate distance from the edges of the rainbow and use that as a kind of ruler.
No, the radius of a rainbow is not constant. The radius of a rainbow depends on the angle at which light is refracted and reflected within water droplets, leading to a range of possible radii for different rainbows.
René Descartes showed by using geometric construction and the law of refraction that the angular radius of a rainbow is 42 degrees (i.e., the angle subtended at the eye by the edge of the rainbow and the ray passing from the sun through the rainbow's centre is 42°).
A rainbow occurs when sunlight is refracted, or bent, and reflected inside water droplets in the atmosphere. The angle at which the light is refracted and reflected causes the different colors of the spectrum to be visible. The height of the raindrop determines the size of the rainbow, but typically rainbows are seen forming a semicircle with a radius of about 42 degrees.
The name "rainbow" comes from the Latin word "radius" which means "ray" or "beam of light." Rainbows are formed when sunlight shines through rain droplets in the atmosphere, refracting or bending the light and creating a spectrum of colors.
The rainbow does not have pink in it.
Rainbow Racers Rainbow Racers Rainbow Racers Rainbow Racers Rainbow Racers Rainbow Racers
Rainbow Batter, rainbow frosting and rainbow sprinkles in a rainbow cupcake liner
Rainbow Ponyta looks like a rainbow
The rainbow represents peace.
a rainbow
Rainbow
the rainbow was a sign of a promise and the erson who made the rainbow was God (Jesus Christ)