• • • film (or sci-fi film) is a that uses, fictional -based depictions of phenomena that are not fully accepted by mainstream science, such as,, and, along with futuristic elements such as,,, or other technologies. Science fiction films have often been used to focus on or, and to explore philosophical issues like the. In many cases, derived from written may be used by filmmakers ignorant of or at best indifferent to the standards of scientific plausibility and plot logic to which written science fiction is traditionally held. The has existed since the early years of silent cinema, when Georges Melies' (1902) employed effects. The next major example in the genre was the film (1927) - being the first science fiction movie. From the 1930s to the 1950s, the genre consisted mainly of low-budget.