Snap up wave power with a magnetic trick

By Duncan Graham-Rowe A WAVE-DRIVEN generator with virtually no moving parts could make wave power a more efficient and competitive form of renewable energy. The key to the device, dubbed the Snapper, is the way it converts a slow, steady wave motion into an efficient current-generating jackhammer-like action. Despite growing enthusiasm for wave power in countries such as the UK and Portugal, wave-driven generators are still dogged by heavy start-up costs and low efficiency. Generators produce electricity most efficiently when a small force is applied at high velocity. Waves tend to produce large, slow-moving forces,
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