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I read the following claim in Slichter's popular book, Principles of Magnetic Resonance (after Fig. 4.3, it's p100 in this version.). Despite the title, the author claims it in a quite general manner in terms of common quantum mechanics.

Angular momentum changing in multiples of $\hbar$ is compelling only for a complete system, e.g., an electron and another magnetic moment. Division of angular momentum change between the parts of a coupled system doesn't have to be in integral units of $\hbar$.

Any clarification or examples?

I read the following claim in Slichter's popular book, Principles of Magnetic Resonance (after Fig. 4.3, it's p100 in the newest version.). Despite the title, the author claims it in a quite general manner in terms of common quantum mechanics.

Angular momentum changing in multiples of $\hbar$ is compelling only for a complete system, e.g., an electron and another magnetic moment. Division of angular momentum change between the parts of a coupled system doesn't have to be in integral units of $\hbar$.

Any clarification or examples?

I read the following claim in Slichter's popular book, Principles of Magnetic Resonance (after Fig. 4.3, it's p100 in this version.). Despite the title, the author claims it in a quite general manner in terms of common quantum mechanics.

Angular momentum changing in multiples of $\hbar$ is compelling only for a complete system, e.g., an electron and another magnetic moment. Division of angular momentum change between the parts of a coupled system doesn't have to be in integral units of $\hbar$.

Any clarification or examples?

I read the following claim in Slichter's popular book, Principles of Magnetic Resonance (after Fig. 4.3, it's p100 in this version.). Despite the title, the author claims it in a quite general manner in terms of common quantum mechanics.

Angular momentum changing in multiples of $\hbar$ is compelling only for a complete system, e.g., an electron and another magnetic moment. Division of angular momentum change between the parts of a coupled system doesn't have to be in integral units of $\hbar$.

Any clarification or examples?

I read the following claim in Slichter's popular book, Principles of Magnetic Resonance (after Fig. 4.3, it's p100 in this version.). Despite the title, the author claims it in a quite general manner in terms of common quantum mechanics.

Angular momentum changing in multiples of $\hbar$ is compelling only for a complete system, e.g., an electron and a magnetic moment. Division of angular momentum change between the parts of a coupled system doesn't have to be in integral units of $\hbar$.

Any clarification or examples?

I read the following claim in Slichter's popular book, Principles of Magnetic Resonance (after Fig. 4.3, it's p100 in this version.). Despite the title, the author claims it in a quite general manner in terms of common quantum mechanics.

Angular momentum changing in multiples of $\hbar$ is compelling only for a complete system, e.g., an electron and another magnetic moment. Division of angular momentum change between the parts of a coupled system doesn't have to be in integral units of $\hbar$.

Any clarification or examples?