different between librations vs vibrations

librations

librations From the web:

• what libations mean
• what does libations mean
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• what are libations
• what does the word libations mean

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vibrations

vibrations From the web:

• what vibrations produced by an earthquake
• what vibrations are observed in ir spectroscopy
• what vibrations are ir active
• what vibrations tell us about proteins
• what vibrations are infrared active
• what vibrations tell about proteins
• what vibrations are called harmonic
• what vibrations cause