Description: Differences in atomic vibrations are simulated by hanging weights from two equivalent springs and a third looser spring. Two of the weights are similar, and a the third weighs less. By gently pulling the weights and releasing them the vibrations of the weights on the springs can be compared to IR vibrations of different bond strenghts and different atomic masses.

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Source: UW Card Catalog

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Keywords: bond strenght, bond length, molecular vibration, atomic vibration