light
I think you need a prism to do it.
Yes.
it will make a rainbow on the wall
When light passes through a prism, it is refracted or bent at different angles depending on its wavelength (color). This causes the light to spread out into its individual colors, creating a rainbow effect known as dispersion.
they prism glints off from the sun causing a spectaculer rainbow
The water acts like a prism and white light shines through it, it makes a rainbow.
the light reflects of the droplets like a prism and bend the rays of light to make a rainbow
Rainbow is made by: Light+water (droplets).Make real a rainbow yourself:Constant and fine shower of water (perhaps from a hose)a sunny dayMake a fake rainbow:Quite powerful torchGlass prism
A laser beam consists of a single frequency of light, therefore it cannot form a spectrum or rainbow.
To separate the rays in a light beam and make a rainbow, you can use a prism or water droplets in the atmosphere. When light enters a prism, it is refracted at different angles depending on its wavelength, causing the different colors in the light spectrum to separate. Similarly, when sunlight passes through water droplets in the air, it is refracted and dispersed, creating a rainbow.
A rainbow window prism creates a colorful display of light by refracting, or bending, sunlight as it passes through the prism. The prism separates the sunlight into its different colors, creating the familiar rainbow pattern.
White light, if passing through a prism, can make a rainbow via the optics phenomenon known as dispersion.