Peripheral drift illusion: Difference between revisions

Added output link requirment to spec (fear not, images have already been added for Wren and Julia)
m (→‎{{header|Wren}}: added imgur link)
(Added output link requirment to spec (fear not, images have already been added for Wren and Julia))
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The image appears to be moving even though it is perfectly static.
 
Provide a link to show the output, either by running the code online or a screenshot uploaded to a suitable image host.
 
;References
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