A New Critique of Theoretical Thought. Deel 4. Index of Subjects and Authors

X

Xenocrates, I, directed the Academy after Speusippos; his division of philosophy into: ethica, physica, and logica, 536.

Xenophon, I, Memor., 3, 9, 4;... 535.

Xenophon, III, in his Memorabilia he mentions Socrates' idea of a teleological world-order, 633.

X-Rays, III, the light spectra of combined atoms do not pass over into the x-ray spectrum of the elements; this spectrum originates from the more central shells of electrons round the nuclei of heavier atoms, 704.