French translation for "iceland spar"

spath d'islande

Example Sentences:

	1.	Nicol made his prism by bisecting a parallelepiped of Iceland spar (a naturally occurring, transparent crystalline form of calcium carbonate) along its shortest diagonal, then cementing the two halves together with Canada balsam. Il fabriqua son prisme en coupant un parallélépipède de spath d'Islande (variété transparente de calcite appelée calcite optique) le long de sa plus courte diagonale puis en accolant les deux moitiés à l'aide de baume du Canada,.
	2.	It consists of a rhombohedral crystal of Iceland spar (a variety of calcite) that has been cut at an angle of 68° with respect to the crystal axis, cut again diagonally, and then rejoined as shown, using a layer of transparent Canada balsam as a glue. Il est constitué d'un cristal rhomboédrique de calcite (spath d'Islande) taillé à un angle de 68°, coupé selon la diagonale, puis recollé à l'aide de baume du Canada.

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