How many colours in a rainbow?

Question

How many colours in a rainbow?

Answer 1

7:     red, orange, yellow, green, blue, indigo and violet

Answer 2

sorry, but the high frequency colours (eg. blue) have the higher energy.

hence why red fades so easily. an object appears red because it reflects red light and absorbs blue (which has lots of energy).

Answer 3

red, orange, yellow ,green ,blue, indigo, and violet (7) and in that order; however it is reversed when seen in a double rainbow, look for it.

Answer 4

Well, Americans generally miss out indigo and therefore only have six:

red

orange

yellow

green

blue

violet

(Roy G. BV, a name.)

But English people generally have seven:

red

orange

yellow

green

blue

INDIGO

violet

They seem to add a color, or Americans miss one out.  Either way, the way they remember it is:

(Richard of York gave battle in vain.)

Answer 5

S.....E......V......E......N......

Answer 6

A rainbow is a refraction of white light (sun light). You will see the full spectrum of colors from the high energy (red) to low energy (blue).

The Primary Colors (red, yellow, blue) and secondary, (purple, orange, green) will be the most clearly visible and easily Identifiable.

Easiest answer is 6. Though there can be any number arbitrarily selected.

Superstitions of the Christian religion gave birth to the myth of there being seven colors. seven is reveered as a holy number as part of Christian lore, and the number six frequently represents evil. So to avoid the the evil number six(three primary and three secondary), a seventh color was added, and is frequently identified as "indigo".

Answer 7

never ending colours because it is a reflection of the earths colour

Answer 8

there are seven colors in a rainbow and there is a word which is used to remember all the colors and it is ''vibgyor''

v= violet

i= indigo

b=blue

g=green

y= yellow

o= orange        and

r= red

Answer 9

All the colours of the sunlight(seven) will be there in the rainbow as the colours of the rainbow are produced by the rain drops which act as tiny prisms.

Answer 10

seven

violet

indigo

blue

green

yellow

orange

red