Final answer:
Physics requires confining the subject in a large apparatus, such as the Cavendish experiment.
Step-by-step explanation:
The subject that requires confining the subject in a large apparatus is Physics.
One example of an experiment in Physics that requires confining the subject in a large apparatus is the Cavendish experiment to measure the gravitational attraction between two spheres. Cavendish used an apparatus similar to the one shown in Figure 7.9 to observe the amount of torsion created in the fiber due to the gravitational force.
This experiment is challenging due to the masses used in the apparatus and the strength of the gravitational force. Small changes in the masses or measurements can have a significant impact on the accuracy of the results.