a small ball (a tennis ball or a table tennis ball is perfect)
a smooth surface, like the floor inside the classroom
a very rough surface, like a rocky piece of ground
Method:
Bounce the ball on the smooth floor and observe what happens.
Bounce the ball on the rough ground floor and observe what happens.
What do you observe?
What is the difference between the two surfaces?
Conclusions:
You should have seen that the ball bounces (is reflected off the floor) in a predictable manner off the smooth floor, but bounces unpredictably on the rough ground.
The ball can be seen to be a ray of light and the floor or ground is the reflecting surface. For specular reflection (smooth surface), the ball bounces predictably. For diffuse reflection (rough surface), the ball bounces unpredictably.
Reflection
The diagram shows a curved surface. Draw normals to the surface at the marked points.
Which of the points, A–H, in the diagram, correspond to the following:
normal
angle of incidence
angle of reflection
incident ray
reflected ray
State the Law of Reflection. Draw a diagram, label the appropriate angles and write a mathematical expression for the Law of Reflection.
The diagram shows an incident ray
. Which of the other 5 rays (A, B, C, D, E) best represents the reflected ray of
?
A ray of light strikes a surface at 15
to the surface normal. Draw a ray diagram showing the incident ray, reflected ray and surface normal. Calculate the angles of incidence and reflection and fill them in on your diagram.
A ray of light leaves a surface at 65
to the surface. Draw a ray diagram showing the incident ray, reflected ray and surface normal. Calculate the angles of incidence and reflection and fill them in on your diagram.
Explain the difference between specular and diffuse reflection.
We see an object when the light that is reflected by the object enters our eyes. Do you think the reflection by most objects is specular reflection or diffuse reflection? Explain.
A beam of light (for example from a torch) is generally not visible at night, as it travels through air. Try this for yourself. However, if you shine the torch through dust, the beam is visible. Explain why this happens.
Refraction
In the previous sections we studied light reflecting off various surfaces. What happens when light passes
through a medium? The speed of light, like that of all waves, is dependent on the medium in which it is travelling. When light moves from one medium into another (for example, from air to glass), the speed of light changes. The effect is that the light ray passing into a new medium is
refracted , or bent. Refraction is therefore the bending of light as it moves from one optical medium to another.
Refraction
Refraction is the bending of light that occurs because light travels at different speeds in different materials.
Questions & Answers
I'm interested in biological psychology and cognitive psychology
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills