Reflection and Light Properties

The video tutorial demonstrates the difference between specular and diffuse reflection using an interactive illustration. It explains how light rays interact with surfaces of varying roughness, following the law of reflection. Users can manipulate the angle of incidence and surface roughness through sliders, observing changes in reflection. The tutorial highlights the role of normals and the impact of surface roughness on the scattering of reflected rays, concluding with a summary of key concepts.

What is the primary focus of the interactive illustration discussed in the video?

• To demonstrate the properties of light speed

• To illustrate the color spectrum of light

• To explore the difference between specular and diffuse reflection

• To explain the concept of refraction

What is the purpose of the 'set reset' button in the illustration?

• To change the color of the light rays

• To initialize the illustration

• To adjust the brightness of the light rays

• To switch between different types of reflections

How does the angle of incidence affect the angle of reflection?

• The angle of reflection is independent of the angle of incidence

• The angle of reflection is double the angle of incidence

• The angle of reflection is equal to the angle of incidence

• The angle of reflection is always half of the angle of incidence

What happens to the normal lines when the surface roughness increases?

• They become more parallel

• They remain unchanged

• They disappear

• They become less parallel

What is the effect of surface roughness on the reflected rays?

• The reflected rays become more focused

• The reflected rays become brighter

• The reflected rays change color

• The reflected rays become more scattered

What is specular reflection?

• Reflection where light rays are scattered

• Reflection where light rays remain parallel

• Reflection where light rays are absorbed

• Reflection where light rays change color

How many light rays are shown when multiple beams are switched on?

• Two

• Three

• Four

• Five

What happens to the organization of reflected rays as the surface becomes rough?

• They become more organized

• They become brighter

• They remain parallel

• They lose their parallel organization

What does the 'show all normal' switch do?

• It shows normal lines for each incident ray

• It hides all normal lines

• It changes the color of the normal lines

• It increases the number of light rays

What is the law of reflection?

• The angle of incidence is double the angle of reflection

• The angle of incidence is half the angle of reflection

• The angle of incidence is unrelated to the angle of reflection

• The angle of incidence is equal to the angle of reflection