That is definitely cheating

how is it cheating?

how is that cheating

It creates a prism effect that would not be present otherwise

OH because it works

Duh

refraction of light is the goal.

Without artificial influence

Which you gave

the foil is not a uniform surface it has colorations by themanufacturing proces which is oily or rainbowish,

Which makes it a void experiment.

the foil cast a rainbow on my desk. This is the same process actual rainbows go though.

then i can use a colidascope

well, yes.

sure i guess

A CD can create a rainbow without water.

again it is a projection of the surface then

That's literally cheating

you don't NEED water to create a rainbow.

you need a material that refracts light.

was the goal to specifically use water?

Is that so? Then do it without a CD.

the rainbow should be the light in the medium being refracted, not due to the coloration of the medium

ivo, how is it being colorized?

the foil in the CD is layered so you can burn it,

there is color involved in that

it's colorizing by refracting standard light to create colors.

the foil is not a single layer medium, you use multiple mediums, and it is not refraction it is reflection of the medium

greetings, flatties

if it were straight up reflection, it would reflect white light. the light is being refracted into its colors.

and then reflecting the rainbow.

it's the same thing.

a rainbow is created by passing through a medium, and by breaking up in speed due to angles, this creates the colorbands, when you use a cd it can take thee color which is in the foil

If it's the same thing then you should be able to do it without that CD, no?

Do it and stop bitching about how it satisfies the argument. Which it does not.

when you mean without a CD, Nomad, what are you suggesting?

actually a rainbow is created by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky.

and it is the water droplets that are refracting the light.

similarily, the disc material is refracting light.

i mirror obviously wouldn't work because it doesn't refract light.

So you should be able to make a rainbow indoors with no outside interference using only light and water.