what is it used for?
2006-11-17 05:17:19 · 8 answers · asked by redbone2293 1 in Education & Reference ➔ Words & Wordplay
indigo is a blue dye.
2006-11-17 05:20:32 · answer #1 · answered by ? 1 · 1⤊ 0⤋
Indigo (or spectral indigo) is the color on the spectrum between 440 and 420 nanometres in wavelength, placing it between blue and violet. Indigo and violet are different from purple (as defined by chromaticians [color scientists]) which does not exist on the electromagnetic spectrum and which can be achieved using additive primary colors by mixing blue light with a red light.
One can see spectral indigo by looking at the reflection of a fluorescent tube in a non-recordable compact disc. This works because the CD functions as a diffraction grating, and a fluorescent lamp generally has a peak at 435.833 nm (from mercury), as is visible on the fluorescent lamp spectrum.
2006-11-17 07:17:31 · answer #2 · answered by I'm ME! 3 · 0⤊ 0⤋
Indigo is a color- a shade of bluish-purple. It is also one of the colors of the rainbow: red, orange, yellow, green, blue, indigo, violet. As a dye, it is used to color things bluish.
2006-11-17 05:22:43 · answer #3 · answered by escutler 2 · 1⤊ 0⤋
INDGO is a website password. It is used to access a certain website. www.indgo.funtigo.com INDGO is the password.
2006-11-17 05:35:22 · answer #4 · answered by bartman40467 4 · 0⤊ 0⤋
its a colour between blue and purple. its used to colour something indigo(duh)
2006-11-17 05:30:27 · answer #5 · answered by Shmily P 3 · 0⤊ 0⤋
How many times are you going to post this question?
2006-11-17 05:19:11 · answer #6 · answered by Anonymous · 0⤊ 0⤋
blue dye
2006-11-17 06:29:25 · answer #7 · answered by meandme 4 · 0⤊ 0⤋
bluish-purple
2006-11-17 06:37:37 · answer #8 · answered by tinkerbell03 2 · 0⤊ 0⤋