As classical definitions of correlation give rise to counterintuitive statements when extreme probability events are involved, we introduce enhanced notions of positive and negative correlation in the general framework of coherent conditional probability. These notions allow to handle extreme probability events in a principled way by accommodating the different levels of strength of the zero probabilities involved (namely, zero layers).
Cannellini-Lingot beans (Phaseolus vulgaris) have been analyzed as optical collectors for ultra-weak photon emission (UPE) during the very early germination process. The optical path of the internally-generated light was investigated using a custom ray-tracing numerical code. Specific light maps reveal an optical focus in correspondence with the plumula and radical tip regions of the embryo. Endoscopic photon counting of the emission confirmed the numerical prediction.
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