"practical sphere" is correct and usable in written English.
It is a phrase used to mean the application of knowledge to practical tasks. For example, "He had an excellent grasp of theoretical physics, but struggled to put it into practice in the practical sphere."
Typically, this would have been in a practical sphere, perhaps training up (and yes, I mean training here) the medical technicians who carry out screening of samples GPs send in, or those who operate expensive machinery in our hospitals.
My point of departure is a puzzle in the Physics' account of chance, which Aristotle divides into two kinds: luck (tychê) in the practical sphere and the so-called automatic or spontaneous in the realm of nature.
Contemporary arguments about Jewish law uniquely reflect both the story of Jewish modernity and a crucial premise of modern conceptions of law generally: the claim of autonomy for the intellectual subject and practical sphere of the law.
Here Bonaventure distinguished signs of God found in the "natural" exercise of the mind in theoretical knowledge (c. 3) from those found in its exercise in the practical sphere "reformed by grace" (c. 4).
In metaphysics, Kant refers to "the ridiculous despotism of the schools" (Bxxxv).[10] When we turn to the practical sphere, however, despotism is far from ridiculous: it is the last, brutal resort for securing some sort of coexistence among people who will not cooperate.
In Williams's last book, Truth and Truthfulness (2002), he applied these ideas to the importance of truth in the theoretical and practical spheres as well as in political and personal relations.
Results show a similar behavior of these fuels under irradiation, opening a perspective to the practical application of sphere-pac fuels in SFR systems.
These results have many practical implications in the sphere of academic librarianship.
I do not come here as an advocate, because whatever position the suffrage movement may occupy in the United States of America, in England it has passed beyond the realm of advocacy and it has entered into the sphere of practical politics.
By introducing generalized natural coordinates and the tree data structure for the spherical geodesic grid, the Lagrange Galerkin method can be used for solving practical problems on the sphere more accurately than current methods, yet requiring less computer time.
Erotics is the sphere of practical life in which subjects cultivate specific values attaching to their relationships to particular people or groups of people.
