How mirages forms?
How diamonds sparkle?
What is major cause happening for it and can you explain with examples?
To make you simply understand the diamonds are cut in specific shape allowing light to come out of its edge only. The light can enter but due to its refractive index the light is bent and can come out of its edge only so we see it sparkling.Also, refractive index = angle of sine of incident ray / angle of sine of refracted ray
Also the mirage are similar you can get more info here https://www.youtube.com/watch?v=ZkkqUh_zaRY