* Refraction: The light ray bends, or refracts, as it passes from the less dense medium (air) to the denser medium (water). This bending occurs because the speed of light is slower in water than in air. The angle of refraction is always smaller than the angle of incidence.
* Reflection: Some of the light is reflected back into the air. This is why you can see your reflection in water.
* Absorption: Some of the light is absorbed by the water, meaning its energy is converted into other forms like heat. This is why water appears blue or green, as these colors are absorbed less than others.
* Scattering: Light is scattered in various directions as it encounters water molecules. This is why the light underwater appears dimmer and less focused.
Here's a breakdown of the key concepts:
* Angle of Incidence: The angle at which the light ray strikes the surface of the water.
* Angle of Refraction: The angle at which the light ray bends as it enters the water.
* Index of Refraction: A measure of how much light bends as it passes from one medium to another. Water has a higher index of refraction than air, meaning light bends more significantly when entering water.
In summary, when a ray of light enters water from air, it bends, reflects, is absorbed, and scattered, leading to the unique characteristics of underwater light.
