Question

What is the difference between TIR and normal reflection?

Answer 1

Definition

1. Whenever light rays go from a much more optically dense material to a less, this phenomenon happens which is known as total internal reflection (TIR).
2. Light or sound waves returning from a surface is called normal reflection.

The difference between TIR and normal reflection

Total Internal Reflection (TIR)	Normal reflection (Reflection)
1. It only occurs whenever light moves from a denser to a lighter medium.	1. It occurs when a ray of light bounces off a surface and changes direction.
2. TIR occurs only whenever certain circumstances are satisfied.	2. Light rays are reflected at any border between two different optical mediums.
3. All of the light is reflected.	3. Only a part of the entire energy inside the light is reflected during typical reflection. Some of it is absorbed, while others have been refracted.
4. The light intensity would be increased, as well as the items appear brighter than in normal reflection. Diamonds shine because of TIR.	4. Normal reflection pictures have a lower brightness.