They are called prisms.
Water and oil can make rainbows because they can bend and fragment the light into the basic color spectrum.
Light could bend when it enters a prism. A prism is a transparent object such as glass.
If the light from a distance galaxy passes near a massive cosmic object, then the gravity of that object will distort space-time. That will cause the light to bend.
They bend light.
Refraction is when light bends through an object. White light is made up of all the colors of the spectrum. Different colors have different wavelengths, therefore they bend at different angles. So when white light passes through a prism the different colors bend at different angles, so they separate to produce the rainbow of light that we see.
A glass prism
The object refracts the light, because of the bending of light or waves as it passes from the material to another.
An eye works by taking the light that is coming from a point on an object and bending it so that it is all focused on single point at the back of the eye. The lens of the eye can only bend the light so much and the closer the object is the more the eye has to bend the light. If the object is closer than 25 cm it can't bend it enough.
Anything that can reflect light is only visible to an eye... others which cannot are dark..
i have the same ? but its blue
When light hits and object, the light could bounce off in another direction. This is due to refraction.
1) if the object is opeaque the will not pass through it 2) if the object is hard the light will bend and forming a shadow of that object 3) if the object is cold its temperature will become exact to the enviropment