reflection and refraction

Front

What is the term for the bouncing back of light when it strikes a surface?

Back

Reflection

Front

What is the bending of light as it passes from one medium to another called?

Back

Refraction

Front

What happens to light when it enters a denser medium?

Back

It slows down and bends towards the normal.

Front

What is the normal line in the context of reflection and refraction?

Back

An imaginary line perpendicular to the surface at the point of incidence.

Front

What is the angle of incidence?

Back

The angle between the incident ray and the normal.

Front

What is the angle of reflection?

Back

The angle between the reflected ray and the normal.

Front

What is Snell's Law?

Back

It relates the angles of incidence and refraction to the indices of refraction of the two media.

Front

What is the index of refraction?

Back

A measure of how much light slows down in a medium compared to vacuum.

Front

What is total internal reflection?

Back

The phenomenon that occurs when light is completely reflected back into a medium at an angle greater than the critical angle.

Front

What is the critical angle?

Back

The angle of incidence above which total internal reflection occurs.