Some students consider light as only going from A to B like a wire stretching from A to B and/or consider light as having strands like a rope.

Light, Sound and Waves


These misconceptions are often fuelled by the ray diagram depiction of light.

Resources to Address This

  • How do we see?  (11-14)

    Ref - SPT Li01TL05

    Right Lines:You are able to see as a result of light entering your eye. Light may come directly from a luminous source, or reflect off an object, or be scattered from particles and then enter the eye.

    View Resource


The following studies have documented this misconception:

  • Watts, D. M. () Student Conceptions of Light: A case study. Physics Education, 20, IOPScience,


    Review sheet

  • Ramadas, J. and Driver, R. () Aspects of secondary students' ideas about light, University of Leeds Centre for Studies in Science & Mathematics Education.

    Review sheet

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