Enhanced backscattering: the universal wave phenomenon

Article Abstract:

Enhanced backscattering is found in electromagnetic, acoustic, spin and every other kind of waves. Constructive interference in coherent channels causes enhanced backscattering during the process of wave multiple scattering. Statistical averaging detects the phenomenon. Information derived from observing enhanced backscattering includes scattering multiplicity, scatterer structure and scattering medium characteristics, rendering it valuable in the optics, radar and acoustics fields. Rather than causing a degradation of radiation that results in coherence loss and average intensity decrease, propagation in random media actually produces an ordering of the radiation. This is called enhanced backscattering, two dozen instances of which have thus far been discovered. The most prominent displays are presented.

Technical, Electromagnetic radiation, Stability, Wave propagation, Acoustics, Theory of Computation, Enhancements

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A houseful of blessings

Article Abstract:

A heart-warming tale is presented of a couple desperate to have a baby and the support they received during and after the pregnancy with quadruplets. The couple had been taking fertility drugs to increase the odds of conceiving, and they got support from family, friends and strangers after the children where born fourteen weeks early.

Personal narratives, Multiple birth, Quadruplets

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Dave Barry

Article Abstract:

Barry remembers an incident that happened during his childhood, when his mother cooked chipped beef in a double boiler. The boiler exploded and threw food all over the room. Barry's food dislikes include stuffed olives, lobster, clams and mussels.

Interview, Humor and anecdotes, Food habits, Journalists, Humorists, Barry, Dave

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