Optical illusion – line length © Siemens Stiftung 2018 CC BY-SA 4.0 international

Optical illusion – line length

Image

Graphic:
Optical illusion – line length (Müller-Lyer illusion).

English, Spanish, German
Image (53.3 kByte)
2018-04-22
The length of the two horizontal lines is identical. They appear to be of different lengths due to the different “arrow heads.”

Information and ideas:
The students can check the length of the horizontal lines with a ruler.
Example
Personal, social and health education (PSHE)
Grade 1 to 4
Elementary school
Eye; Optical illusion; Sense organ; Vision
Siemens Stiftung Media Portal
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© Siemens Stiftung 2018
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