Home -> Overview of animations -> Teaching animation: Law of reflection

Animation, reflection, reflection law, optics

The interactive animation on the “law of reflection” illustrates the geometric relationships between the angle of incidence and the angle of reflection.

Tip: You can use the mouse to move the spotlight. The gray dots are also adjustable.

Click your mouse to zoom the rectangle in or out.

The animation was originally developed as a offline application for Windows and Macintosh systems and for integration into Microsoft PowerPoint slides. The online version presented here serve as a preview. The exe or app file can be downloaded free of charge from members area.



The animation shows a spotlight that illuminates a surface. The shape of the surface, the position of the beam and the orientation of the ray can be changed. Depending on the angle of incidence, the light beam (in accordance with the low of “angle of incidence = angle of refection") is reflected differently.

To clarify the law of reflection, the labels of the angels can be shown. To accomplish this the angle of incidence, the angle of reflection and a perpendicular line are depicted. Just in case are partially transparent medium is used, a fractured light beam is also depicted.

The shape of the surface can be changed with the mouse interactively. In addition to a flat surface, different curved and wavy surfaces can also be formed. The light source is represented by a light-ray. Both the position of the light source and the target point of the light beam can be repositioned interactively using the mouse. Just click on a chosen point.

Note: The direction of the rays can be adjusted by moving the gray dot on the lower side of the rectangle. The ray will then be focused on this spot.

In all interactions in the animation adapt seamless and in real time. This also applies to all indicators and labels. In addition to the angle of reflection, a refraction angle is also shown.

General information

Title:Animation, reflection, reflection law, optics
Target group:
  • Teachers and lecturers
  • Independent learners
Platforms (primary):
  • Microsoft® Windows®
  • Microsoft® PowerPoint®
  • Apple® Macintosh®
  • Resizable without the loss of visual clarity
  • No installation required
DocumentsLicensing Information
About Flash Player security

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Authoring tool: Adobe Animate


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