The concept of a stationary device as a mechanism for time travel is a popular and frequently used trope in science fiction. In many stories, characters use a device that remains stationary, such as a time machine or a time portal, to travel through time. These devices often require a power source or some other form of energy to function, and characters must carefully control and manipulate them to travel through different eras of history. Through the use of a stationary device, characters can visit different times and places, either to witness historical events or to alter the course of history. They can experience different eras, interact with people from the past, and explore different possibilities for the future. The use of a stationary device as a mechanism for time travel offers a sense of control and stability that other methods, such as astral projection or black holes, may not provide. Overall, the concept of a stationary device as a means for time travel is a popular and engaging trope in science fiction that offers readers a chance to explore the concept of time in a unique and exciting way.