View source for Thermo-dielectric effect

{{Short description|Production of electric currents and charge separation during phase transition}}
The '''thermo-dielectric effect''' is the production of [[electric current]]s and [[charge (physics)|charge]] separation during [[phase transition]].

This interesting effect was discovered by [[Joaquim da Costa Ribeiro]] in 1944. The [[Brazil]]ian [[physicist]] observed that [[solidification]] and [[melting]] of many [[dielectric]]s are accompanied by charge separation. A thermo-dielectric effect was demonstrated with [[carnauba wax]], [[naphthalene]] and [[paraffin wax|paraffin]]. [[Charge separation]] in [[ice]] was also expected. This effect was observed during [[water]] [[freezing]] period, [[electrical storm]] effects can be caused by this strange [[phenomenon]]. Effect was measured by many researches - [[Bernhard Gross]], [[Armando Dias Tavares]], [[Sergio Mascarenhas]] etc. [[César Lattes]] (co-discoverer of the [[pion]]) supposed that this was the only effect ever to be discovered entirely in [[Brasil]].

== References ==

*{{cite journal | last = Gross | first =  B. | title = Theory of Thermodielectric effect | journal =  Physical Review | volume =94 | pages = 1545–1551 | year = 1954 | doi = 10.1103/PhysRev.94.1545|bibcode = 1954PhRv...94.1545G | issue = 6 }}
*{{cite book | url = https://books.google.com/books?id=4FLaZzmP6RIC&pg=PA248 | title = Science in Latin America: a history| isbn = 978-0-292-71271-3 | author1 = Saldaña, Juan José | year = 2006}}

== External links ==
* [http://dielektrika.kvalitne.cz/termojeveng.html Thermodielectric effect measurement]

{{States of matter}}

[[Category:Thermodynamics]]
[[Category:Electricity]]
[[Category:Physical phenomena]]
[[Category:Energy conversion]]