Final answer:
Inventions like hoverboards and lifelike holograms are theoretical concepts in Physics, requiring advancements in energy and technology.
Nike's self-lacing shoes are one of the few concepts making headway. Practical applications of electric or solar-powered flight are currently limited to small-scale models like drones.
Step-by-step explanation:
The concept of inventions like hoverboards, self-tying sneakers, and life-like holograms largely falls under the field of Physics, as these ideas involve manipulating forces, energy, and light.
While companies like Nike have developed prototypes of self-lacing shoes, technology for consumer-grade hoverboards or sophisticated three-dimensional holograms is yet to be fully realized.
In Physics, we learn about the principles that need to be overcome or utilized, such as gravity for hoverboards, electric energy for sneaker mechanisms, and light manipulation for holography.
Although we have imaginative inventions from stories and theoretical concepts for devices that can fly or levitate, practical application of these ideas is limited by current technology and energy sources.
Current real-world applications of electric flight include drones and model airplanes, which operate on a much smaller scale compared to passenger aircraft.
The notion of devising something practical like a car or airplane running solely on solar power remains a demonstration rather than a feasible alternative, at least with present technology.