Mirage is a good example which is seen due to refraction of light and especially due to total internal reflection.
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A semi-opposing opinion:
No reflection is required for the creation of a mirage, only refraction.
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Hope you might have heard about the conditions for total internal relection to take place.
1) Ray has to traverse from denser to rarer
2) the angle of incidence is to be more than critical angle of the denser medium
So in such a case the refraction phenomenon cannot take place and so all the energy to be refracted is sent back to the denser medium itself. Hence named as total internal reflection.
Of course total internal reflection is totally different from ordinary reflection.
rainbow
Fireworks are manmade.
no, the light rays are caused due to reflection,transmission and absorption of light. Index of refraction.
a mirage
Refraction of sunlight by raindrops, the refraction depending upon wavelength to produce the colors
You're going for "mirage", but we're not comfortable with that description. It's not really the "image" that's caused by refraction. It's more the location or direction in which the image is seen that's caused by refraction.
A circular band of colored light around a light source, as around the sun or moon, caused by the refraction and reflection of light by ice particles suspended in the intervening atmosphere
Natural light - a rainbow is an optical phenomenon that is caused by both refraction of light in water droplets in the atmosphere, resulting in all the colours of light appearing in the sky, in the form of an arc.
This is caused by a change in the speed of light .
rainbow
Fireworks are manmade.
A moon dog (moondog), or paraselene, is a lunar halo caused by light refraction off ice crystals high in the atmosphere. A link can be found below.
Refraction
Refraction is caused by light crossing from one medium to another.
no, the light rays are caused due to reflection,transmission and absorption of light. Index of refraction.
Refraction is the bending of light, it occurs when a light ray enters/passes through an object that is less/more dense than the atmosphere around it.
imasge