Resultado de búsqueda
Hace 1 día · Alexander Joseph "Lex" Luthor (/ ˈ l uː θ ɔːr,-θ ər /) is a supervillain appearing in American comic books published by DC Comics.The character was created by Jerry Siegel and Joe Shuster.Lex Luthor originally appeared in Action Comics #23 (cover dated: April 1940). He has since endured as the archenemy of the superhero Superman.. Lex Luthor was depicted as a narcissistic and ...
Hace 1 día · Under some conditions, an energy transition can be excited by "two" photons that individually would be insufficient. This allows for higher resolution microscopy, because the sample absorbs energy only in the spectrum where two beams of different colors overlap significantly, which can be made much smaller than the excitation volume of a single beam (see two-photon excitation microscopy ).
