Real image (such as the images on the right), real rays of light are always represented by full, solid lines; perceived or extrapolated rays of light are represented by dashed lines. A real image occurs where rays converge, whereas a virtual image occurs where rays only "appear" to converge. Real images can be produced by concave mirrors and converging lenses, only if the object is placed further away from the mirror/lens than the focal point and this real image is inverted. As the object approaches the focal point the image approaches infinity, and when the object passes the focal point the image
What If (comics) set of "What If?" issues, including one based on the Spider-Man story "". Volume 6 consists of five issues (2007–2008). A sixth, "What If: This Was the Fantastic Four", featuring Spider-Man, Wolverine, Ghost Rider, and Hulk, was to be released in November 2007, but it was withheld due to the death of Mike Wieringo. "What If: This Was the Fantastic Four" was released as a tribute to Wieringo in June 2008 as a 48-page special. All its proceeds went to the Hero Initiative. The other issues were: "What If?: Planet Hulk" (October 2007); "What If?: Annihilation" (November 2007); two "What