trm_500d8c8fcc520 Cognitive Atlas : Lexicon : visual angle RDF output for 'visual angle' InteractiveResource Cognitive Atlas Cognitive Atlas RDF Generator Melissa Lewis 2012-07-23 17:43:42 text/rdf en Generated by testgen.php on Thu Oct 19 20:14:46 PDT 2017. Revision 2: 1 previous definitions. See for complete revision history. SKOS properties defined in the angle a viewed object subtends at the eye, usually stated in degrees of arc, and is a function of the size of the object and its distance from the eye visual angle visual angle is a part of visual perception