Heisenbergn.

1932 W. T. Stace Theory of Knowl. xiv. 381 Heisenberg's Principle of Indeterminacy..lays it down that an electron may have a determinate position or a determinate velocity, but not both.

1951 Physical Rev. 82 922/1 Note that these Schrödinger equations have been obtained from the Heisenberg picture.

1955 W. Pauli in W. Pauli Niels Bohr & Devel. Physics 38 We..restrict ourselves to the discussion of the field operators (Heisenberg-representation).

1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. i. 3 As this [sc. wave mechanics] provides a relatively simple method of representing atoms and molecules in pictorial terms, we use it in preference to such alternatives as Heisenberg's matrix mechanics which can be shown to be equivalent.

1968 Peace News 18 Oct. 6/3 A kind of Heisenberg effect which is far more serious than anything in the physical or biological sciences: the very act of observation distorts that which is being observed.

1968 J. J. C. Smart Between Sci. & Philos. 12 Some scientific results (Heisenberg's uncertainty principle, for example) do not bear on the problem of free will.