When a ray of light travels from one medium to another medium, either it bends towards the normal or away from normal.
This beam is hitting the glass at a 45-degree angle, with respect to the normal.
Some of the light bounces off, "reflected". Some of the light goes through, but the angle changes "refracted".
When the refracted beam passes through the other side of the glass, it is refracted again.
The process of bending of light ray from its straight path as it enters from one medium into another medium is called Refraction of light.
OR
The change in direction of straight line path of ray of light when it travels from one medium to another medium is called refraction.
e.g., When a ray of light incident beam falls on a surface separating a rarer medium (air) and denser medium (glass), it is derived from its path and bends towards normal, but when it travels from denser medium (e.g., glass in this case) to rarer medium (air), it bends away from the normal as shown in fig above.
Angle of incidence : The angle made by incident ray with normal at the point of incidence is called angle of incidence.
Angle of Refraction : The angle made by the refracted ray with the normal is called angle of refraction.
Courtesy:horrorseek.com
ecademy.agnesscott.edu
This beam is hitting the glass at a 45-degree angle, with respect to the normal.Some of the light bounces off, "reflected". Some of the light goes through, but the angle changes "refracted".
When the refracted beam passes through the other side of the glass, it is refracted again.
The process of bending of light ray from its straight path as it enters from one medium into another medium is called Refraction of light.
OR
The change in direction of straight line path of ray of light when it travels from one medium to another medium is called refraction.
e.g., When a ray of light incident beam falls on a surface separating a rarer medium (air) and denser medium (glass), it is derived from its path and bends towards normal, but when it travels from denser medium (e.g., glass in this case) to rarer medium (air), it bends away from the normal as shown in fig above.
Angle of incidence : The angle made by incident ray with normal at the point of incidence is called angle of incidence.
Angle of Refraction : The angle made by the refracted ray with the normal is called angle of refraction.
Courtesy:horrorseek.com
ecademy.agnesscott.edu
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