When the green man lights up to show traffic should stop and it's your turn to cross, the cone starts spinning.
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Users of centrifuges, spinning cone columns and cryo-extractors?
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V3Solar proved that point when it unveiled its new spinning, cone-shaped solar panels, which can generate 20 times as much energy as flat panels.
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For the first approach, he shapes a wettened cone of clay on a fast-spinning wheel, gradually turning a small dimple in the top into a bowl shape, which he smooths with a deerskin cloth and releases from its base with one quick draw of a taut wire.
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