Measuring Angles and Reflection Flashcard #1

Front

What is the angle of incidence?

Back

The angle of incidence is the angle formed between the incident ray and the normal (a line perpendicular to the surface) at the point of incidence.

Front

What does the law of reflection state?

Back

The law of reflection states that the angle of incidence is equal to the angle of reflection.

Front

What is specular reflection?

Back

Specular reflection is the reflection of light from a smooth surface, where the reflected rays are parallel and produce a clear image.

Front

What is the reflected ray?

Back

The reflected ray is the ray of light that bounces off a surface after striking it.

Front

How do you calculate the angle of reflection?

Back

The angle of reflection is equal to the angle of incidence, measured from the normal.

Front

What is the normal line in reflection?

Back

The normal line is an imaginary line that is perpendicular to the surface at the point where the incident ray strikes.

Front

If the angle between the incident ray and the reflected ray is 50 degrees, how do you find the angle of incidence?

Back

To find the angle of incidence, you can use the formula: angle of incidence = (angle between incident ray and reflected ray) / 2.

Front

What is the relationship between the angle of incidence and the angle of reflection?

Back

The angle of incidence is always equal to the angle of reflection according to the law of reflection.

Front

What is the difference between specular and diffuse reflection?

Back

Specular reflection occurs on smooth surfaces and produces clear images, while diffuse reflection occurs on rough surfaces and scatters light in many directions.

Front

What happens to light rays when they strike a rough surface?

Back

When light rays strike a rough surface, they undergo diffuse reflection, scattering in various directions.