Lesson 7 — Reflection

Reflection
6.4 + 6.5
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Slide 1: Tekstslide
ReflectionMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 28 slides, met tekstslides en 1 video.

Onderdelen in deze les

Reflection
6.4 + 6.5

Slide 1 - Tekstslide

This lesson
  • Intro reflection
  •  Plane mirror
  • Virtual Vs real image
  • Law of reflection

Slide 2 - Tekstslide

Goals
  • Explain why the image in a mirror is reversed
  • Describe what is meant by an image
  • Explain what is meant by a real and a virtual image
  • Define the law of reflection

Slide 3 - Tekstslide

Reflection

What comes to mind?

Slide 4 - Tekstslide

Slide 5 - Tekstslide

Reflection 
Definition of Reflection
When a light ray is obstructed by any solid surface it will reflect back from the surface, as it cannot pass through the surface.
Light ray will be reflected with the same angle with which it is falling on the surface.

Slide 6 - Tekstslide

Slide 7 - Tekstslide

Slide 8 - Tekstslide

Ray diagram

Slide 9 - Tekstslide

6.4
  • Plane mirror
  • Image — Virtual image - real image
  • Ray diagram
  • Types of reflection

6.5

  • The law of reflection


Slide 10 - Tekstslide

Plane mirror
A flat mirror

Slide 11 - Tekstslide

Plane mirror 
A plane mirror is a smooth or highly polished surface that reflects the light or wave for the formation of an image. It is a flat, polished, and reflective surface that produces a virtual image of the real object.

Slide 12 - Tekstslide

Images in plane  mirrors 
plane mirrors produce images with a number of distinguishable characteristics. Images formed by plane mirrors are virtual, upright, left-right reversed, the same distance from the mirror as the object's distance, and the same size as the object.

Slide 13 - Tekstslide

Why the image in plane mirror is laterally reversed
The light rays which come from the object get reflected from the plane mirror and reaches our eyes. At this point of time our brain feels that the reflected ray is coming from inside the mirror. This is the reason why the object seems to be laterally inverted.

Slide 14 - Tekstslide

Plane Mirror demonstration

Slide 15 - Tekstslide

Slide 16 - Tekstslide

Lateral inversion

Slide 17 - Tekstslide

Slide 18 - Tekstslide

Image

Slide 19 - Tekstslide

Image
  • Virtual image
  • Real image

Slide 20 - Tekstslide

Slide 21 - Video

Real vs virtual image
Virtual image — projected by the brain (intangible)

Real image — light reflected on a tangible object

Slide 22 - Tekstslide

6.4
  • Plane mirror
  • Image — Virtual image - real image
  • Ray diagram
  • Types of reflection

6.5

  • The law of reflection


Slide 23 - Tekstslide

The law of reflection

Slide 24 - Tekstslide

Phet simulation
  • Search for: Phet bending Light 
  • Use the book and the simulation together to define the law of reflection — write down your definition
  • Write down the key terms to the law of reflection

Slide 25 - Tekstslide

The law of reflection
When light falls on a 

Slide 26 - Tekstslide

Goals
  • Explain why the image in a mirror is reversed
  • Describe what is meant by an image
  • Explain what is meant by a real and a virtual image
  • Define the law of reflection

Slide 27 - Tekstslide

Slide 28 - Link