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étymologie

Qu'est-ce (qui) est pyroelectric - définition

PROPERTY OF CERTAIN CRYSTALS WHICH ARE NATURALLY ELECTRICALLY POLARIZED AND CONTAIN LARGE ELECTRIC FIELDS

Pyroelectric effect; Pyroelectric; Pyroelectric crystal; Pyroelectric detector; Pyroelectric Effect

pyroelectric

¦ adjective having the property of becoming electrically charged when heated.

Derivatives

pyroelectricity noun

Pyroelectric

·adj Pertaining to, or dependent on, pyroelectricity; receiving electric polarity when heated.

II. Pyroelectric ·noun A substance which becomes electrically polar when heated, exhibiting opposite charges of statical electricity at two separate parts, especially the two extremities.

Pyroelectricity

Pyroelectricity (from the two Greek words pyr meaning fire, and electricity) is a property of certain crystals which are naturally electrically polarized and as a result contain large electric fields.Ashcroft, N.

https://en.wikipedia.org/wiki/Pyroelectricity

Wikipédia

Pyroelectricity

Pyroelectricity (from the two Greek words pyr meaning fire, and electricity) is a property of certain crystals which are naturally electrically polarized and as a result contain large electric fields. Pyroelectricity can be described as 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, so that the polarization of the material changes. This polarization change gives rise to a voltage across the crystal. If the temperature stays constant at its new value, the pyroelectric voltage gradually disappears due to leakage current. The leakage can be due to electrons moving through the crystal, ions moving through the air, or current leaking through a voltmeter attached across the crystal.

https://en.wikipedia.org/wiki/Pyroelectricity

Exemples du corpus de texte pour pyroelectric

1. Other crystals do this when you heat or cool them; these are called pyroelectric crystals.

2. The new cold fusion experiment went something like this÷ scientists inserted a small pyroelectric crystal (lithium tantalite) inside a chamber filled with hydrogen.