RT Journal Article SR Electronic A1 O'Grady, Gerald T1 Woody Vasulka's Spherical Knowledge. From Pinhole Camera to Pinball Machine JF Iluminace YR 2006 VO 18 IS 2 SP 9 OP 30 UL https://iluminace.cz/en/artkey/ilu-200602-0002.php AB The study extends the detailed technical analysis of Woody Vasulka's work into a broader cultural context and is full of references to various fields of knowledge. The author believes that a general education, coupled with the ability to micro-analyze the physical or electronic engineering aspects of image and sound, is necessary to understand the work of Steina and Woody Vasulka.