# Consider a system of two spins in a magnetic field, in thermal equilibrium with a reservoir at temperature T. Each spin has energy −μB when aligned with the magnetic field, and energy +μB when anti-aligned. What is the probability of observing the system in the three possible total energies: −2μB, 0, and 2μB?

Consider a system of two spins in a magnetic field, in thermal equilibrium
with a reservoir at temperature T. Each spin has energy −μB when aligned with the magnetic field, and energy +μB when anti-aligned. What is the probability of observing the system in the three possible total energies: −2μB, 0, and 2μB?

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The post Consider a system of two spins in a magnetic field, in thermal equilibrium with a reservoir at temperature T. Each spin has energy −μB when aligned with the magnetic field, and energy +μB when anti-aligned. What is the probability of observing the system in the three possible total energies: −2μB, 0, and 2μB? appeared first on Superb Professors.