Pyroelectricity (from the Greek pyr, fire, and electricity) is the ability of certain materials to generate a temporary voltage when they are heated or cooled. The change in temperature modifies the positions of the atoms slightly within the crystal structure, such that the polarization of the material changes. This polarization change gives rise ...
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http://en.wikipedia.org/wiki/Pyroelectricity
• (n.) Electricity developed by means of heat; the science which treats of electricity thus developed.
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http://thinkexist.com/dictionary/meaning/pyroelectricity/
development of opposite electrical charges on different parts of a crystal that is subjected to temperature change. First observed (1824) in quartz, ... [1 related articles]
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http://www.britannica.com/eb/a-z/p/137
Electricity generated when a pyroelectric substance is put under temperatures in which it will generate electricity.
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http://www.encyclo.co.uk/local/22291
Pyr`o·e`lec·tric'i·ty noun (Physics) Electricity developed by means of heat; the science which treats of electricity thus developed.
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http://www.encyclo.co.uk/webster/P/204
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n] - generation of an electric charge on certain crystals (such as tourmaline) as a result of a change in temperature
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http://www.webdictionary.co.uk/definition.php?query=pyroelectricity
This is used to describe the effect of minerals that become charged after heating. Tourmaline for example, is known to attract the ashes of a fire when heated and then repel them.
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https://www.encyclo.co.uk/local/20501
Piezoelectric materials are also pyroelectric. They produce electric charge as they undergo a temperature change. When their temperature is increased, a voltage develops having the same orientation as the polarization voltage. When their temperature is decreased, a voltage develops having an orientation opposite to the polarization voltage, creatin...
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https://www.encyclo.co.uk/local/20687
noun generation of an electric charge on certain crystals (such as tourmaline) as a result of a change in temperature
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https://www.encyclo.co.uk/local/20974
electrification or electrical polarity produced in certain crystals by temperature changes.
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https://www.infoplease.com/dictionary/pyroelectricity
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