Cal Meacham is a fictional character from the 1955 science fiction film This Island Earth. He is portrayed as a brilliant scientist and engineer who becomes involved in a mysterious project that leads him to extraterrestrial beings. His character is known for his intelligence and curiosity, which drive the plot of the film. In This Island Earth, Cal discovers a secretive organization that is conducting experiments with advanced technology. As he uncovers the truth, he faces moral dilemmas and challenges that test his values and beliefs. The film explores themes of science, ethics, and the potential consequences of technological advancements.