Some of these chemical clouds, notably sodium and barium, were visible by the process of resonance scattering of sunlight.
2.
An alternative description of the same phenomenon is in terms of polaritons : "'giant cross-sections "'of the resonance scattering of electronic polaritons on impurities and lattice defects.
3.
A quick search turned up lots of examples such as : Section 8.4 . 8 " Enclosure Resonances ", Engineering noise control : theory and practice; Chapter 13, " Modal Resonances ", Master Handbook of Acoustics; Section 9.2 " Effects of Reflections on Timbre-- The Audibility of Resonances ", " Resonances are the'building blocks'of most of the sounds that interest, entertain, and inform us ", and many other passages, Sound reproduction : loudspeakers and rooms; Chapter 8, " Experimental study of acoustic resonances of elastic spheres and hemispherically endcapped cylinders ", and many other examples over 100 + other pages, Acoustic resonance scattering; Section " Resolution of Resonances ", and " Possible Cochlear-Nuclear Responses to Resonances ", Sound color; Sub-chapter " Entrainment with other types of resonances ", Multidimensional Mind : Remote Viewing and the Evolution of Intelligence . talk ) 17 : 28, 1 June 2010 ( UTC)
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