Abstract
In earlier chapters, we discussed sound waves, the actions of vibrating atoms and molecules passing along their motions in a linear chain which finally elicit vibrations in our ear drums. Our brains interpret these as sound, the information by which we communicate with each other and the pleasure that we gather from great vocalists and musical instruments that generate these waves in a skillful, blended manner.
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Notes
- 1.
The mathematically inclined reader can read about these “multipole” aspects in [3].
- 2.
What we ordinarily think of fundamentally as particles, such as electrons which are also quantized entities having “spin 1/2”, i.e. intrinsic angular momentum \(\hbar /2\), actually can also be regarded as waves. This wave-to-particle association is referred to as “wave-particle duality”, an insight tracing back to L. de Broglie.
- 3.
This should not be seen as at all surprising: after all, quantum phenomena are aspects of the ingredients of our universe and they would most logically be regarded as being affected by their habitat, namely spacetime.
- 4.
Being an integral of a tensor makes it non-transformable as a second rank tensor.
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© 2012 Springer-Verlag Berlin Heidelberg
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Cooperstock, F.I., Tieu, S. (2012). Gravitational Waves and Energy-Momentum. In: Einstein's Relativity. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30385-2_6
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DOI: https://doi.org/10.1007/978-3-642-30385-2_6
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