The iWatch, if it even exists, will not be a quartz movement nor a mechanical one.

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Not even the indestructible quartz surface will probably be able to shield the kibbutz from the tide of history.

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The quartz movement does not require battery changes, as a rotor in the watch moves with the motion of your wrist to charge the internal battery.

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To measure that, the four gyroscopes in Gravity Probe B are made of fused quartz spheres, which will not expand or contract as the temperature changes.

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The most beautiful, subdued and quiet section is the Lyda Hill Gems and Minerals Hall, a low-lit space with blackened vitrines in which objects are brilliantly lighted, as in an art museum: case after case of minerals you have heard of (gold, quartz and tourmaline), and others, even more dazzling, that you probably have not (rhodochrosite).

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