Size of this preview: 640 × 403 pixels. Other resolution: 320 × 201 pixels. Full resolution (download) (742 × 467 pixels, file size: 475 KB, MIME type: image/png) About File History Metadata There is no description yet. Add a description. Appears on these pages of Leonard Hofstadter/Gallery - Groups Add an image Leonard Hofstadter/Gallery - Himself Add an image The Positive Negative Reaction "The Positive Negative Reaction" is the sixteenth episode of the ninth season of the American... File history Click on a date/time to view the file as it appeared at that time. Date/TimeThumbnailDimensionsUserComment current23:42, February 23, 2016742 × 467 (475 KB)Physicsisphun! (wall | contribs) Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file. Horizontal resolution 37.79 dpc Vertical resolution 37.79 dpc Retrieved from "http://bigbangtheory.wikia.com/wiki/File:Pn27.png?oldid=189741"