Let's Shed Some Light on Diffuse, Indirect and Direct Light, Penumbra, Umbra Scattering and Reflection

Let's Shed Some Light on Diffuse, Indirect and Direct Light, Penumbra, Umbra Scattering and Reflection

Learning Objective

At the end of the lesson, you will be able to identify and explain the concepts of diffuse, indirect and direct light, penumbra, umbra, scattering and reflection.

This slide sets the learning objective for the lesson. Make sure students understand what they will be able to do by the end of the lesson.

What do you already know about the different types of light and their effects on shadows?

What is Light?

Light is a form of energy that travels in straight lines and can be reflected, refracted, or absorbed.

Introduce the concept of light and its basic properties to students.

Direct Light

Direct light comes from a single source and travels in a straight line. It creates sharp, well-defined shadows.

Explain the concept of direct light, and show examples of direct light and the shadows it creates.

Indirect Light

Indirect light is light that has been reflected off another object before reaching the subject. It creates softer shadows.

Explain the concept of indirect light, and show examples of indirect light and the shadows it creates.

Diffuse Light

Diffuse light comes from multiple sources, and is scattered in many directions. It creates soft, often indistinct shadows.

Explain the concept of diffuse light, and show examples of diffuse light and the shadows it creates.

Umbra and Penumbra

The umbra is the darkest part of a shadow, where all light is blocked. The penumbra is the lighter part of a shadow, where some light is blocked.

Introduce the concepts of umbra and penumbra, and show examples of shadows with both.

Scattering

Scattering is when light is redirected in many different directions as it passes through a medium, such as air or water.

Explain the concept of scattering, and show examples of how it affects the appearance of objects and shadows.

Reflection

Reflection is when light bounces off an object and travels in a different direction. It can create multiple shadows or reflections.

Explain the concept of reflection, and show examples of how it affects the appearance of objects and shadows.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.