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24 Feb 2004: this, introducingalong the way new ideas and new concepts. ... In this way the new things thatwe are learning are always rooted in the familiar, and we should always beable to see why we are doing something.

24 Feb 2004: Without detailed calculation, sketch a graph, analogous to that given on page8-12, for the behaviour of Iz and Sz for these new initial conditions as afunction of mixing time.

24 Feb 2004: The diagram showsthat Iy (the "old operator") is rotated to Iz (the "new operator"). ... The diagram showsthat –Iz (the "old operator") is rotated to –Ix (the "new operator").

24 Feb 2004: ω1/2π the relationship can be expressed in terms of the initial and new pulsewidths, τinit and τnew:.

24 Feb 2004: along the x axis).The magnetization would then precess about the new magnetic field whichwould bring the vector down away from the z axis, as illustrated in Fig.

24 Feb 2004: For times much longer than τc the spins havemoved to completely new positions and the correlation function has fallenclose to zero.

24 Feb 2004: 7–1. 7 Two-dimensional NMR†. 7.1 Introduction. The basic ideas of two-dimensional NMR will be introduced by reference tothe appearance of a COSY spectrum; later in this chapter the productoperator formalism will be used to predict the form of

24 Feb 2004: The component along the new reference axis is proportional to cos t ( )φ. ... A new complex data set is now formed by using the signal from Eq.