What is Servo Control?
14/03/2022
Total Internal Reflection
06/06/2023
Seraph Phenomenon:
SUPERIOR MIRAGE:
The superior mirage is generally examined at sea.
In this case, the water surface is cooler than the air in the atmosphere.
When the rays from the sun illuminate a ship as seen in the picture, the image reflected from this base creates a virtual (apparent) image as if the ship is hovering, due to the low index of refraction in the upper layers of the atmosphere.
Seraph Phenomenon:
LOWER MIRAGE
For most materials, the refractive index decreases as the temperature increases.
The decrease in the refractive index of the soil or the air just above the road on a sunny and dry day causes the sun’s rays to be reflected from this layer.
This layer acts as a mirror, reflecting the image of the people nearby.
If we only see the reflection of the blue sky, we perceive this image as water.
This is called the lower mirage.
