~e; light-energy definitions

From bc <human@electronetwork.org>
Date Sun, 17 Mar 2002 11:45:54 -0600

   [when doing basic research, the dictionary is a valued and valuable
   resource, from which to begin analysis. when EM as the research,
  though, it can be somewhat confounding. as there are not many who
  claim to know what it is, exactly. as it is so many things, a mystery,
  revealed in its parts. the connection between light and electromagnetism
  has long been hard to get a sense of. it is so literal, one of the best of
  the descriptions being that of Guy Murchie and how a tree uses light
  and transforms its energy via photosynthesis. in any case, definitions
  and their cross-references are often the most exciting areas for at
  least this one person's imagination, in that no book has yet to put all
  the definitions of EM in one place, as its many forms (atom-universe)
  have many words, definitions, contexts, points of view of the phenom.
  thus, sometimes it is enjoyable to surf the dictionary for no reason
  other than to find out what one does not know, and might still never
  be able to know or comprehend, and yet still can appreciate in ways,
  even if naive. as it is nature. the world. the environment. the basis
  upon which we find ourselves as people needing to relate & resolve.
  by recognizing, that is, recognizing how little we know, and how little
  of our knowledge interrelates, is not divided into specialized quadrants
  but brought together in a larger and more accurate modeling of what is
  before our EM senses everyday, can become a goal of sorts, for some.
  there are some illuminating definitions of EM in its various forms in
  most substantive dictionaries, mostly encylopedic versions, which
  can offer some minimal depth of description, unless one is lucky enough
  to have access to the volumes of the Oxford English Dictionary, which
  as a researcher, is the motherlode for such a method of wordsmithing].

  pyroelectricity:	the electric charges produced
		in various crystals by heating.

  piezoelectricity: 	the property of some asymmetric
		crystals (e.g. quartz) of acquiring
		opposite electrical charges on
		opposing faces when they are
		subjected to pressure (conversely,
		an applied electrical potential results
		in a change of volume). Thus quartz
		oscillators are used as frequency
		stabilizers and ultrasonic generators.

  photoperiod:	the relative durtion of periods of light
		and dark as these affect the growth
		or behavior of plants and animals
		(e.g. budding or bird migration)

  phototelegraphy:	the transmission of photographs by
		telegraphy || transmission by signals
		of light, e.g. by a heliograph.

  photovoltage:	the electromotive force developed in
		a conducting circuit when the boundary
		between certain dissimilar substances
		within the circuit is bathed in electro-
		magnetic radiation || any voltage produced
		in a photosensitive substance by electro-
		magnetic radiation.

  phototaxis:	a taxis in response to light (biological
		and military definitions).

  photosynthesis:	the synthesis of chemical substances with
		the aid of light, esp. the formation of carbo-
		hydrates (e.g. in green plants) from carbon
		dioxide and water with the liberation of
		oxygen, in the presence of chlorophyll.

  phototrophic:	the ability to use carbon dioxide, in the
		presence of light, for metabolism.

  photokinesis:	movement in response to light.

  photolysis:	chemcial decomposition effected by
		electromagnetic radiation.

  photic zone:	the region of acquatic environment in
		which the intensity of natural light is
		sufficient for photosynthesis.

  photoelectric:	of any of the factors involved in the
		effect of of electromagnetic radiation
		on the electrical behavior of matter.

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  electromagnetism / infrastructure / civilization