What does the term "practical science" commonly refer to in the context of technology?

The term "practical science" is often used to describe applications of scientific knowledge that lead to tangible, technology-based solutions that can be utilized in everyday life. In this context, laptops and smartphones represent a direct embodiment of practical science, where scientific principles, engineering, and innovation converge to create devices that greatly enhance communication, efficiency, and productivity.

These devices illustrate how scientific knowledge is transformed into practical technology that people can use. This transformation highlights the significance of applied sciences in improving technology, making it an integral part of modern living. The other options, while related to science, do not specifically emphasize the technological application in the same direct manner. Theoretical physics concepts are more about abstract ideas rather than direct application, biological experimentation can be more about research methodologies rather than technology, and environmental impact studies focus on understanding ecological consequences rather than producing technology itself.